Author Question: A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a vertical wall. ... (Read 114 times)

audie · **on:** Jul 28, 2018

A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a vertical wall. The particle rebounds with a speed of 3.0 m/s. What is the magnitude of the impulse delivered to the particle?
a. 24 Ns
b. 32 Ns
c. 40 Ns
d. 30 Ns
e. 8.0 Ns

Question 2

A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of 1.5 m/s. What is the magnitude of the impulse exerted on the ball by the floor?
a. 9.6 Ns
b. 2.4 Ns
c. 6.4 Ns
d. 1.6 Ns
e. 1.0 Ns