SOLVE THE FOLLOWING AND FOLLOW THE SOLUTION ( Given, required and solutions (

Raindrop - 0 m/s Given: m/ 4t = 0.060 kg/s Vo = - 15 m/s v/ = 0 m/s Required: F = the average force exerted by the rain on the roof. Solution: F = - mv - mv. At F =-(0.060kg/s)-15m/s)=+0.90N This force is in the positive or upward direction, which is re force on each falling drop in order to bring it to rest erted on the roof by the rain also has a rovitude of 0.90 .90 N Physics 11: Seatwork. Solve the following problems. (Odd numbers only) 4.1 Momentum 1. A 1000-kg car travels at a speed of 20 m/s. (a) At what speed must a 3000-kg truck travel to have the same momentum? (b) At what speed must a 7.3-kg bowling ball travel to have the same momentum? 2. (a) Calculate the momentum of a 30-kg dog running at a speed of 8.0 m/s toward the west. (b) How fast must a 70-kg per- son run to have the same momentum as the dog? 3. Estimate the magnitude of your momentum in units of kg. m/s when walking to physics class. Justify verbally the num- bers used in your estimate. = 4. What is the change in momentum of a 0.0567-kg tennis ball traveling at 25 m/s if it hits a practice wall and rebounds in the opposite direction with the same speed? Is the vector change in momentum in the direction of the initial velocity, the direction of the final velocity, or neither? Explain. . 5. (a) A 145-g baseball traveling at 35 m/s is hit by a bat and rebounds in the opposite direction at 40 m/s. What is the change in momentum of the ball? (b) A 0.055-kg golf ball starts at rest and leaves the tee with a speed of 50 m/s. What is the change in momentum of the golf ball? 6. (a) The momentum of a 900-kg car initially moving north at 10 m/s increases by 10,800 kg.m/s. Calculate the car's final velocity (a vector). (b) Calculate the car's final velocity if its momentum decreases by 10,800 kg.m/s