Question

1. How much will the impulse change if the force acting on the object doubles?

A.the impulse will be halved

B.the impulse will double

C.the impulse will not change

D.the impulse will be quadrupled

2.You apply a 10 N force to a 2 m long socket wrench at an angle of 10 degrees with respect to the handle of the wrench. How much torque is applied?

A.19.7 N m

B.3.5 Nm

C.1.7 Nm

D.20 Nm

3.A missile is fired into the air at a distant target. Before reaching the target, it explodes mid-air and breaks up into two pieces, one of which has a mass of 200 g and flies off horizontally with a speed of 8.2 m/s. The second piece has a mass of 300 g and flies off vertically with a speed of 4.5 m/s. What was the initial velocity of the firecracker?

A.72 m/s, 56 degrees from the horizontal

B.18.7 m/s, 29 degrees from the horizontal

C.4.2 m/s, 39 degrees from the horizontal

D.21.2 m/s 56 degrees from the horizontal

Answer 1