State Newton's second law of motion in terms of momentum

What will be an ideal response?


The rate of change of momentum of an object is equal to the net force applied to it.

Physics & Space Science

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A 250-kg crate is placed on an adjustable inclined plane. If the crate slides down the incline with an acceleration of 0.25 m/s2 when the incline angle is 25°, then what should the incline angle be for the crate to slide down the plane at constant speed? Note: g = 9.8 m/s2

a. 12° c. 24° b. 21° d. 29°

Physics & Space Science

At which of the following temperatures would one liter of water weigh the most?

a. 2°C b. 4°C c. 8°C d. 90°C e. It would weigh the same at all these temperatures.

Physics & Space Science

A camera lens is initially set at f/8 for a shutter speed of 1/250 s. If the amount of lighting on the subject is unchanged, and the lens is set at f/4, what is the proper shutter speed at this setting?

a. 1/1000 s b. 1/500 s c. 1/250 s d. 1/2 s e. 1/8 s

Physics & Space Science

A train sounding its horn is moving toward an observer. The pitch of the horn's sound relative to its normal pitch is

a. lower. b. sometimes higher and sometimes lower. c. higher. d. the same.

Physics & Space Science