Author Question: A 2 900-kg truck moving at 11.0 m/s strikes a car waiting at a traffic light, hooking bumpers. The ... (Read 81 times)

kwoodring · **on:** Jul 28, 2018

A 2 900-kg truck moving at 11.0 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 7.00 m/s. What was the mass of the struck car?
a. 4 750 kg
b. 7 460 kg
c. 1 760 kg
d. 1 660 kg
e. 4 560 kg

Question 2

During a snowball fight two balls with masses of 0.30 and 0.70 kg, respectively, are thrown in such a manner that they meet head-on and combine to form a single mass. The magnitude of initial velocity for each is 12.0 m/s. What is the speed of the 1.0-kg mass immediately after collision?
a. zero
b. 4.8 m/s
c. 12 m/s
d. 8.4 m/s
e. 3.6 m/s