13.

A 0.2-kg steel ball is dropped straight down onto a hard, horizontal floor and bounces straight up. The ball's speed just before and just after impact with the floor is 10 m/s. Determine the magnitude of the impulse delivered to the floor by the steel ball. O 2N .5 O zero N 's O 200 N S O 4N 5 O 20N 'SAn airplane is traveling at 225 m/s when it strikes a weather balloon (m = 1.82 kg), which can be considered to be at rest relative to the ground below. After the collision, the balloon is caught on the fuselage and is traveling with the airplane. The collision takes place over a time interval of 4.44 x 10-3s. What is the average force that the balloon exerts on the airplane during the collision? O 2.78 x 104N O 415 N O 5.07 x 10'N O 9.22 x 104N O 4.61 x 10- NA 4.0-kg block slides along a frictionless surface with a constant speed of 5.0 m/s as shown. Two seconds after it begins sliding, a horizontal, time-dependent force is applied to the mass. The force is removed eight seconds later. The graph shows how the force on the block varies with time. 4.0 kg Force (N) 0 2 4 6 8 10 Time (s) What is the magnitude of the total impulse of the force acting on the block? O 54 N 5 O 20N O 42 N 5 O 60 N 5 O 48 N 5