4. 14) When a wheel turns through one complete rotation, the angle (in radians)

Question

4. 14) When a wheel turns through one complete rotation, the angle (in radians) that It has turned through is closest to (Points : 5) 5. 15) Two points are on a disk that rotates about an axis perpendicular to the plane of the disk at its center. Point B Is 3 times as far from the axis as point A. If the linear speed of point B is V, then the linear speed of point A is (Points : 5) 1. 11) Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 5 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is (Points : 5) 2. 12) A 70-kg wide receiver running west at 10 m/s collides head-on with, and s seized by, a 140-kg lineman lumbering eastward at 5 m/s. In this collision, (Points : 5) 3. 13) A glider airplane Is coasting horizontally when a very heavy object suddenly falls out of it. As a result of dropping this object and assuming there is no air resistance, (Points : 5)

Explanation / Answer

1) KE = P^2/2m

here P = momentum is constant

m2 = 2m1

K2 = K1*m1/m2 = K1/2 = K/2

option B

2)

option D

3) option E

4) option B

5) V/3

option D

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