- #1
physicsisfunn
- 1
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i don't know how to solve these
1. Ball A, with a mass of 0.20-kg, strikes ball B, with a mass of 0.30-kg. The initial velocity of ball A is 0.95 m/s. Ball B is initially at rest. What are the final speed and direction of ball A and B after the collision if they stick together?
2. A 1200-kg cannon is placed at rest on an ice rink. A 95-kg cannonball is shot from the cannon. If the cannon recoils with a speed of 6.80 m/s, what is the speed of the cannon ball?
3. An 82-kg reciever, moving 0.75 m/s south, is tackled by a 110-kg defensive linemen moving 0.15 m/s east. The football players hit the ground together. Calculate their final velocity (magnitude and direction).
4. A 95-kg car traveling south at 29 m/s hits a truck traveling 18 m/s west. After the collision the vehicles stick together and travel with a final momentum of 4.0 x 104 kg*m/s at an angle of 45 degrees. What is the mass of the truck?
5. A 77-kg woman is walking 0.10 m/s east in the gym. A man throws a 15-kg ball south and accidentally hits the woman. The woman and the ball move together with a velocity of 0.085 m/s. Calculate the direction the woman and the ball move.
1. Ball A, with a mass of 0.20-kg, strikes ball B, with a mass of 0.30-kg. The initial velocity of ball A is 0.95 m/s. Ball B is initially at rest. What are the final speed and direction of ball A and B after the collision if they stick together?
2. A 1200-kg cannon is placed at rest on an ice rink. A 95-kg cannonball is shot from the cannon. If the cannon recoils with a speed of 6.80 m/s, what is the speed of the cannon ball?
3. An 82-kg reciever, moving 0.75 m/s south, is tackled by a 110-kg defensive linemen moving 0.15 m/s east. The football players hit the ground together. Calculate their final velocity (magnitude and direction).
4. A 95-kg car traveling south at 29 m/s hits a truck traveling 18 m/s west. After the collision the vehicles stick together and travel with a final momentum of 4.0 x 104 kg*m/s at an angle of 45 degrees. What is the mass of the truck?
5. A 77-kg woman is walking 0.10 m/s east in the gym. A man throws a 15-kg ball south and accidentally hits the woman. The woman and the ball move together with a velocity of 0.085 m/s. Calculate the direction the woman and the ball move.