What magnitude net force is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in ?
A) 444 N
B) 1620 N
C) 3240 N
D) 4360 N
E) 11800 N
Question 2
Two air track carts move along an air track towards each other. Cart A has a mass of 450 g and moves toward the right with a speed of 0.850 m/s. Cart B has a mass of 300 g and moves toward the left with a speed of 1.12 m/s.
What is the total momentum of the two-cart system? A) 0.047 kg m/s toward the right
B) 0.719 kg m/s toward the right
C) 0.719 kg m/s toward the left
D) 0.750 kg m/s toward the right
E) 0.750 kg m/s toward the left