Answer:
All wind is caused by the uneven heating of Earth's surface, which sets convection currents in motion. Convection currents on a large scale cause global winds; convection currents on a small scale cause local winds.
Explanation:
There you go again. Newton's 3rd Law says "for every action there is an EQUAL OPPOSITE reaction.".
EQUALand OPPOSITE
If THIS MUCH force pushes the bullet THAT way, then THE SAME amount of force pushes the rifle THIS way.
The bullet pushes backward on the rifle with the same amount of force as the rifle exerts on the bullet.
Answer:
67.7 N
Explanation:
Draw a free body diagram of the person on the sled. There are four forces:
67.7 N to the right,
friction force to the left,
weight force down,
and normal force up.
Constant velocity means 0 acceleration.
Sum of the forces in the x direction:
∑F = ma
67.7 N − F = 0
F = 67.7 N