Question

Forces contribute to the net force on a car rolling down a ramp?

Forces contribute to the net force on a car rolling down a ramp.

a. Which force supports the car’s weight? ______________________________
b. Which force accelerates the car down the ramp? ______________________________
c. Which force acts against the motion of the car? ______________________________

Answer 1

a. the normal force is the ground pushing up on the car
b. gravity accelerates the car down toward the earth
c. friction and air resistance act against the motion

Answer 2

Answers

1) Reaction

2) Gravitational force

3) Frictional force

Step-by-step explanation

Reaction is directly opposite and equal to action(normal force). The normal force is the weight. So we can say that reaction supports the weight of the car.

Objects fall downwards due to acceleration due to gravity. The acceleration force is provided by the gravitational force. The car is accelerated downwards by the gravitational force.

Frictional force is the force that opposes relative motion between two bodies. When iar is involved, we call it viscosity. So the force that acts against the motion of the car is friction.