A 50kg skater at rest on a frictionless rink throws a 2kg ball, giving the ball a velocity of 10m/s. Which statement describes the skaters subsequent motion?

2. What determines the charge of an ion?

Which of the following statements does NOT use the term angular size or angular distance correctly? choices: 1. The angular distance between those two bright stars in the sky is about 2 meters. 2.

About half of the electricity in the united states is generated using coal. true or false

If a car slows from 15 m/s to 5 m/s over 5 seconds, what was the car's acceleration?

Suppose you found a rock that has all of the characteristics of a meteorite. You take it to a physicist friend who confirms that it is a meteorite but says that radioisotope dating indicates an age of only a billion years.

A potter's wheel of radius 16 cm starts from rest and rotates with constant angular acceleration until at the end of 32 s it is moving with angular velocity of 10 rad/s. what is the angular acceleration? answer in units of rad/s 2.

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0∘ above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm above the level ground.

Design an experiment (Fair Test) to find out what would be a good insulator for a dog house.

Which of these changes does a submarine encounter as it returns from the bottom of the ocean to the surface of the ocean? a. the amount of sunlight increases. b. the water temperature decreases. c. the amount of plants decreases. d.

Why do some elements have symbols that don't use letters in the element's name?