Answer to Question #179551 in Physics for Nicole

Question

A cart with negligible friction is given an initial velocity up a ramp. The cart rises a distance, turns around, and travels back toward a motion sensor. Which of the following would describe the cart's displacement, velocity, and acceleration the moment the cart is at the highest point on the ramp if the direction away from the sensor is determined to be positive?

A) displacement is positive, velocity is zero, acceleration is negative

B) displacement is positive, velocity is zero, acceleration is zero

C) displacement is positive, velocity is positive, acceleration is zero

D) displacement is zero, velocity is positive, acceleration is positive

Answer 1

The correct option is (a) because there is a distance between the initial and highest points, the car stops there for a moment, while the acceleration slows the car down from the moment it reached the ramp.