Question

p mv Ap mv-mv 1. A 1,500 kg car is driving down the road when the brakes are applied. If the car is initially traveling at 12 m/s and slows to a stop after a time of 4 seconds, please determine: a) the change in momentum of the car b) the net force acting on the car. A race car has a mass of 1,000 kg. It accelerates from an initial velocity of 30 m/s to a final velocity of 50 m/s. What is the change in the race car's momentum? 2. 3. A 2,000 kg car is stalled in an intersection. To move the car, a net force of 200 N is What is the impulse delivered to this car? What is applied for a period of 4 seconds. the car's final velocity? A red dynamics cart has a mass of 0.25 kg and is given an initial velocity of +1.6 m/s. A blue dynamics cart has a mass of 0.75 kg and is initially at rest. After the collision between the carts, the red cart has a final velocity of -0.4 m/s. What is the final velocity of the blue cart? 4. 5. A 2 kg ball of clay is thrown to the right with an initial velocity of 5 m/s. It then collides with a 3 kg dynamics cart that is initially at rest. After the collision, the ball of clay sticks to the cart, and they move together. What is the final velocity of the cart-and-ball-of-clay?

Answer 1