Your lab instructor projects a ball horizontally from a lab bench that lands on the floor a horizontal distance away. Compared with the time the ball would take if simply dropped vertically from the bench, the time in the air for the projected ball is

1) less.
2) the same.
3) greater.

The horizontal distance from the bottom of the bench the ball travels in hitting the floor is equal the ball's initial speed
4) multiplied by its time in the air.
5) coupled with its speed of fall.
6) squared plus its downward speed squared when hitting the floor.


Answer: 2, 4

Physics & Space Science

You might also like to view...

Specific Heat: If 150 kcal of heat raises the temperature of 2.0 kg of a material by 400 F°, what is the specific heat capacity of the material?

A. 1.35 kcal/kg ? C° B. 0.75 kcal/kg ? C° C. 0.34 kcal/kg ? C° D. 0.19 kcal/kg ? C°

Physics & Space Science

In order to produce precipitation, an air mass must rise because rising air

A) allows water droplets more time in the cloud where they can grow in size. B) produces downdrafts which increases the evaporation of droplets from the cloud. C) supports the downfall of raindrops. D) all of the above.

Physics & Space Science

An electron undergoes a collision with a proton. In the center of mass system, the energy of the electron is 4000 MeV. What is the energy of the electron in the lab system, where the proton is at rest before the collision?

A) 34 GeV B) 37 GeV C) 40 GeV D) 43 GeV E) 46 GeV F) 52 GeV

Physics & Space Science

In what part of the spectrum are starburst galaxies brightest? Remember: Starbursts are dusty. What does dust do?

A.) X-ray. B.) Ultraviolet. C.) Visible. D.) Infrared. E.) Radio.

Physics & Space Science