A car is moving with a speed of 15 ms. How long does it take to cover a distance

of 1.2 km?

A hot-air balloon is ascending at the rate of 10 m/s and is 74 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

3) If an airplane is in flight cruising at constant velocity, what can be said about the net work being done on the plane? Draw a free-body diagram that supports your answer.

A hydraulic system at the mechanic shop can perform up to 180,000 joules of work in a day. if throughout the day it can lift 10 cars from the ground to a height of 2 meters, how much can the cars each weigh in Newtons?

A beam of light, which is traveling in air, is reflected by a glass surface. Does the reflected beam experience a phase change, and if so, by how much is the phase of the beam changed?

Distinguish between a distance-time graph and a speed-time graph.

Why are some liquids more viscous than others?

If a person weighs 125 lbs, 8oz., how many mg does s/he weigh

An iron rod is: A:a good conductor of heat and electricity, but not magnetic B: magnetic and a good conductor of heat, but is an insulator of electricity C: magnetic and a good conductor of heat and electricity D: not magnetic and an insulator of

Which stage are there homologous chromosomes lines up down the middle of the cell

Suppose you were bungee jumping from a bridge while blowing a hand-held air horn. How would someone remaining on the bridge hear the pitch of the air horn as time increased? a. The pitch would get progressively lower (i. e., smaller frequency) b.