science
Grade-11
Easy
Question
A soccer ball of mass 420 g is kicked at 20 m·s−1 towards the goal post.
Calculate the momentum of the ball.
- 1.4 m/s
- 0m/s
- 8.4 kg m/s
- none
The correct answer is: 8.4 kg m/s
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A cart with a mass of 2kg traveling at 6 m s–1 collides with another cart of mass 1kg
traveling in the same direction at 2 m s–1. It bounces off, as shown in Figure4. After impact, the 2kg cart travels at 3 m s–1 in the same direction. Calculate the velocity of the 1kg cart after the collision.
A cart with a mass of 2kg traveling at 6 m s–1 collides with another cart of mass 1kg
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