A 3 kg rock is subject to the force of gravity for 8 s. What is the impulse?

The impulse on the block due to force of gravity is 235.2 N.s

Explanation:

Given;

mass of the block, m = 3 kg

time of force of gravity action on the block, t = 8 s

Force of gravity on the block is given as;

F = mg

where;

m is mass of the block

g is acceleration due to gravity = 9.8 m/s²

F is the force of gravity

Substitute the given values and calculate F

F = mg

F = 3 x 9.8

F = 29.4 N

The Impulse on the block is given by;

J = Ft

J = 29.4 N x 8 s

J = 235.2 N.s

Therefore, the impulse on the block due to force of gravity is 235.2 N.s

b) 10 minutes

girls stopped for 10 minutes.

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​