Determining the Force Normal on a Toy Car moving up a Curved Hill (5:06)
A 0.453 kg toy car moving at 1.15 m/s is going up a semi-circular hill with a radius of 0.89 m. When the hill makes an angle of 32° with the horizontal, what is the magnitude of the force normal on the car? This is an AP Physics 1 topic.

Content Times:
0:08 Translating the problem
1:01 Clarifying the angle
1:51 Drawing the free body diagram
3:20 Summing the forces
4:22 How the tangential velocity and force normal change