On some planet, a ball rolls off a horizontal table of height 1.73 m with a speed 2.45 m/s. If the horizontal range is 1.31 m, calculate the acceleration of gravity, in m/s2.

A tennis ball is kicked horizontally off the edge of a 20 m high building and lands a distance of 20 m from the edge of the building. What was the final horizontal velocity of the tennis ball, in m/s? Ignore air resistance. Answer: m/s (rounded to the hundredths place)

A helicopter blade spins at exactly 115 revolutions per minute. Its tip is 6.50 m from the center of rotation. (a) Calculate the average speed (in m/s) of the blade tip in the helicopter's frame of reference. m/s (b) What is its average velocity (in m/s) over one revolution? m/s

An astronaut is rotated in a horizontal centrifuge at a radius of 5.0 m. (a) What is the astronaut’s speed if the centripetal acceleration has a magnitude of 7.0g? (b) How many revolutions per minute are required to produce this acceleration? (c) What is the period of the motion?

A ball is projected vertically upward with a velocity of 40m/sec. Three seconds later a second ball is projected vertically upward with a velocity of 30m/sec. At what point above the surface of the earth will they meet.

B7

A tennis ball is kicked horizontally off the edge of a 33 m high building and lands a distance of 22 m from the edge of the building. What was the final horizontal velocity of the tennis ball, in m/s? Ignore air resistance.

A projectile is fired straight upward from the Earth’s surface with an initial speed of 33.3 m/sec. What is its’ speed after 2.8 secs?

A projectile fired on a certain planet Xi follows a parabolic trajectory as shown in the figure. The position of the ball is shown at 1s intervals until t= 3 s. At t=1 s, the ball's velocity is v= (20î+ 8j) m/s. What is the magnitude of the acceleration due to gravity on planet Xi? y v = (201+ 8j) m/s 2s 1 s 3s Os

A physics student on Planet Exidor throws a ball, it follows the parabolic trajectory as shown below. The ball's position is shown at 1 sec intervals until t=3s.At t=ls, the ball's velocity is v= (2i^ +2j^)m/s.(a). Determine the ball's velocity at t= Os, 2s, 3s. (b). What is the value of g on planet Exidor?(c) .What was the ball's launch angle? (2.06+205) mis 0s