A. The horizontal and vertical motions are independent. B. me force on the proj come is C. The acceleration of the projectile is constant throughout the flight. D. The path depends upon the initial velocity, but not upon the mass of the projectile E All of the above statements are true. 7. If a long distance jumper athlete leaves the ground at an angle 37 above the horizontal at a speed of A. 4.8m does he jump in the horizontal direction? (use: g=10m/s^2 D.12m B. 6m C. 9.6m 8. A projectile is fired on Earth with some initial velocity Another projectile is fired from the surface of the Moon with the same initial velocity If air resistance is ignored, which projectile has the greater range? (Note that the free-fall acceleration on the Moon is about 1.6m/s^2 A. The one fired from the surface of the Moon C. both projectiles has equal range B. The one fired from the surface of the Earth D. undetermined 9. Two projectile P and Q are thrown with the same speed but at angles of 400 and 500 with the horizontal respectively. The range of P will be:A. Equal to that of Q B. Greater than that of Q C.Less than that of Q D. 3/4 times that of Q 10. A projectile is fired in such a way that its horizontal range is equal to three times its maximum height . What is the angle of projection ? A. 300 B. 530 C. 600 D. 450 11. At which position in its flight will a ball experience its minimum speed during inclined projection? A. At the beginning B. At the end C. At maximum height D. The same speed at all positions 12. A ball is kicked into the air from the ground at an angle Theta with the horizontal When the ball reaches its highest point, which statement is TRUE? A. Both the velocity and acceleration of the ball are zero. B . Its velocity is not zero, but its acceleration is zero. C. Its velocity is perpendicular to its acceleration. D. Its acceleration depends on the angle at which the ball was thrown. 20. If the initial velocity of a projectile be doubled, keeping the angle of projection same, the maximum height reached by it will be :A. Halved B. Doubled C. Quadrupled D. Remain the same 13. The velocity of projection of an inclined projectile is given b y:v=(3i+2j)m/s the speed of projectile at the highest point of trajectory is : A. 3m/s B 2m/s C 1m/s D. 5m/s 14. A long jumper leaves the ground at an angle of 200 above the horizontal and at a speed of 11.0m/s How far does he jump in the horizontal direction and what is the maximum height reached respectively?

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A. The horizontal and vertical motions are independent. B. me force on the proj come is C. The acceleration of the projectile is constant throughout the flight. D. The path depends upon the initial velocity, but not upon the mass of the projectile E All of the above statements are true. 7. If a long distance jumper athlete leaves the ground at an angle 37 above the horizontal at a speed of A. 4.8m does he jump in the horizontal direction? (use: g=10m/s^2 D.12m B. 6m C. 9.6m 8. A projectile is fired on Earth with some initial velocity Another projectile is fired from the surface of the Moon with the same initial velocity If air resistance is ignored, which projectile has the greater range? (Note that the free-fall acceleration on the Moon is about 1.6m/s^2 A. The one fired from the surface of the Moon C. both projectiles has equal range B. The one fired from the surface of the Earth D. undetermined 9. Two projectile P and Q are thrown with the same speed but at angles of 400 and 500 with the horizontal respectively. The range of P will be:A. Equal to that of Q B. Greater than that of Q C.Less than that of Q D. 3/4 times that of Q 10. A projectile is fired in such a way that its horizontal range is equal to three times its maximum height . What is the angle of projection ? A. 300 B. 530 C. 600 D. 450 11. At which position in its flight will a ball experience its minimum speed during inclined projection? A. At the beginning B. At the end C. At maximum height D. The same speed at all positions 12. A ball is kicked into the air from the ground at an angle Theta with the horizontal When the ball reaches its highest point, which statement is TRUE? A. Both the velocity and acceleration of the ball are zero. B . Its velocity is not zero, but its acceleration is zero. C. Its velocity is perpendicular to its acceleration. D. Its acceleration depends on the angle at which the ball was thrown. 20. If the initial velocity of a projectile be doubled, keeping the angle of projection same, the maximum height reached by it will be :A. Halved B. Doubled C. Quadrupled D. Remain the same 13. The velocity of projection of an inclined projectile is given b y:v=(3i+2j)m/s the speed of projectile at the highest point of trajectory is : A. 3m/s B 2m/s C 1m/s D. 5m/s 14. A long jumper leaves the ground at an angle of 200 above the horizontal and at a speed of 11.0m/s How far does he jump in the horizontal direction and what is the maximum height reached respectively?

Answer 1

Here are the answers to the questions:---**7. If a long-distance jumper athlete leaves the ground at an angle of 37° above the horizontal at a speed of 10 m/s, how far does he jump in the horizontal direction?**Answer: **C. 9.6 m**Explanation: The horizontal range is calculated using the formula:

Substitute

:

---**8. Which projectile has the greater range: one fired on Earth or one fired on the Moon (same initial velocity)?**Answer: **A. The one fired from the surface of the Moon**Explanation: The range depends inversely on gravity (

). Since the Moon's gravity is smaller (

), the projectile will travel farther on the Moon.---**9. Two projectiles P and Q are thrown with the same speed but at angles of 40° and 50°, respectively. What is the relationship between their ranges?**Answer: **A. Equal to that of Q**Explanation: For complementary angles (e.g., 40° and 50°), the ranges are equal when the speeds are the same.---**10. A projectile's horizontal range is three times its maximum height. What is the angle of projection?**Answer: **B. 53°**Explanation: Using the relationship between range and height for a projectile, the angle can be derived as approximately 53°.---**11. At which position in its flight will a ball experience its minimum speed during inclined projection?**Answer: **C. At maximum height**Explanation: At maximum height, the vertical velocity component becomes zero, leaving only the horizontal velocity, which is constant and thus the minimum speed.---**12. When a ball reaches its highest point, which statement is TRUE?**Answer: **C. Its velocity is perpendicular to its acceleration**Explanation: At the highest point, the vertical velocity is zero, so the remaining velocity is horizontal, which is perpendicular to the downward acceleration due to gravity.---**13. The speed of a projectile at the highest point of its trajectory is given by \( v = (3i + 2j) \, \text{m/s} \):**Answer: **A. 3 m/s**Explanation: At the highest point, the vertical velocity (

-component) becomes zero, so the speed is determined solely by the horizontal velocity (

-component), which is 3 m/s.---**14. A long jumper leaves the ground at an angle of 20° above the horizontal and at a speed of 11.0 m/s. How far does he jump horizontally, and what is the maximum height reached?**Answer: Horizontal distance: **11.8 m**, Maximum height: **0.71 m**Explanation: - Horizontal range:

- Maximum height:

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