Question
Multiple Chaice 1 point Which person is experiencing an acceleration? A adriver of a car that is braking to stop at trailic: lights B a passenger in a train final is stationary in a railway station C a shopper in a large sture ascending an Escrelation (moving stairs) at a uniform rate D askydiver falling at constant speed lowarules the Earth A C
Solution
3.9
(247 Votos)
Pedro
Elite · Tutor por 8 anos
Resposta
The person experiencing acceleration is 'A'.
Explicação
## Step 1Acceleration is defined as the rate of change of velocity of an object with respect to time. This means that acceleration is not just about the object moving, but also about the object's speed or direction of movement changing.## Step 2Let's analyze each option:### Option A: A driver of a car that is braking to stop at traffic lights. This person is experiencing acceleration because the speed of the car is changing (decreasing).### Option B: A passenger in a train that is stationary in a railway station. This person is not experiencing acceleration because the train is not moving, hence there is no change in velocity.### Option C: A shopper in a large store ascending an escalator (moving stairs) at a uniform rate. This person is not experiencing acceleration because the speed of the escalator is constant, hence there is no change in velocity.### Option D: A skydiver falling at constant speed towards the Earth. This person is not experiencing acceleration because the speed of the fall is constant, hence there is no change in velocity.