1) A boy is standing motionless on a skateboard. He throws a basketball forward. Describe his motion.

2) List three things that are conserved quantities.
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3) Write Newton’s 3 Law in terms of momentum.

4) A ball of modeling clay is fired toward a stationary block resting on a frictionless surface. What direction will the block move if the clay strikes and sticks to the block?

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.