A ball drops some distance and loses 30 j of gravitational potential energy. do not ignore air resistance. how much kinetic energy did the ball gain?

Just for funs: If a fly is moving forward in a train that is going 100mph then is the fly going faster than the train?

When the crests of 2 identical waves meet, what is the amplitude of the resulting wave?

Taken parallel to the base, which of the following solids has a cross section that is not a rectangle? A. rectangular pyramid B. square pyramid C. triangular pyramid D. rectangular prism

A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0 cm. If a timer is started when its displacement is a maximum (hence x = 4 cm when t = 0), what is the speed of the mass when t = 3 s?

Describe the total momentum of billiard balls before and after the cue ball collides with another ball.

Voltage can exist without A. current. B. resistance. C. a closed circuit. D. all of these

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of 2.60 m/s, grabs and holds onto him so that they move off together with a velocity of 1.30 m/s.

What effect does an increase in temperature have on viscosity?

Aman tosses a jart upward with a velocity of 14.1 m/s a 60° angle

Describe accuracy, precision and best fit line.