What is the acceleration of a rock thrown straight upward on the way up? At the top of its flight? On the way down?

A. The acceleration of the rock thrown upward has the same value of 7.2 m/s-sq downwards at all three points of the rock on way up, stationary at the top of its flight and on way down. The magnitude and direction of the velocity of the rock will not change but the acceleration will remain different in magnitude and direction.
B. The acceleration of the rock thrown upward has the same value of - 9.8 m/s2 downwards at all three points of the rock on way up, stationary at the top of its flight and on way down. The magnitude and direction of the velocity of the rock will be changing but the acceleration will remain the same in magnitude and direction throughout its trip.
C. The acceleration of the rock thrown downwards has the same value of 5 m/s-sq downwards at all three points of the rock on way up, stationary at the top of its flight and on way down. The magnitude and direction of the velocity of the rock will be changing but the acceleration will remain the same in magnitude and direction throughout its trip.


Answer: B. The acceleration of the rock thrown upward has the same value of - 9.8 m/s2 downwards at all three points of the rock on way up, stationary at the top of its flight and on way down. The magnitude and direction of the velocity of the rock will be changing but the acceleration will remain the same in magnitude and direction throughout its trip.

Physics & Space Science

You might also like to view...

No evidence of impact craters has been found on Venus

Indicate whether the statement is true or false

Physics & Space Science

Amateur astronomers have contributed to the understanding of impact events on Jupiter

Indicate whether the statement is true or false

Physics & Space Science

A parallel light beam containing two wavelengths, 480. nm and 700. nm, strikes a plain piece of glass at an angle of incidence of 60°. The index of refraction of the glass is 1.4830 at 480. nm and 1.4760 at 700. nm

Determine the angle between the two beams in the glass.

Physics & Space Science

A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the bullet's acceleration as it passes through the board?

A. ?500 km/s2 B. ?550 km/s2 C. ?360 km/s2 D. ?520 km/s2 E. ?275 km/s2

Physics & Space Science