Calculate the magnitude of the linear momentum for the following cases. (a) a proton with mass 1.67 10-27 kg, moving with a speed of 5.10 106 m/s kg · m/s (b) a 15.0-g bullet moving with a speed of 480 m/s kg · m/s (c) a 72.5-kg sprinter running with a speed of 10.5 m/s kg · m/s (d) the earth (mass = 5.98 1024 kg) moving with an orbital speed equal to 2.98 104 m/s. kg · m/s

The linear momentum of an object is given by:

p = mv

where

m is the mass

v is the velocity

Let's apply this formula to the 4 cases:

a) proton

m = 1.67 10-27 kg

v = 5.10 10^6 m/s

Momentum:

(b) bullet

m = 15.0 g = 0.015 kg

v = 480 m/s

Momentum:

(c) Sprinter

m = 72.5 kg

v = 10.5 m/s

Momentum:

(d) Earth

m = 5.98 10^24 kg

v = 2.98 10^4 m/s

Momentum:

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

it's a b and