1. A baseball player decides to show his skills by catching a 0.142-kg baseball dropped from the top of a 96-m tall building. What is the speed (in m/s) of the baseball just before it strikes his glove?
2. A child and sled with a combined mass of 35.9 kg slide down a frictionless hill. The sled starts from rest and has acquired a speed of 3.7 m/s by the time it reaches the bottom of the hill. What is the height (in m) of the hill? Enter your answer, accurate to the fourth decimal place.
3. A 39.3-kg high jumper leaves the ground with a speed of 5.7 m/s. How high (in m) can he leap? Enter your answer, accurate to the third decimal place.
4. Find the height (in m) from which you would have to drop your textbook so that it would have a speed of 14.2 m/s just before it hits the floor?
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment