<span>You are given the 560 J of work of a man used while pushing a shopping cart down an aisle that is 15 m long. You re asked to find how much force he used. The equation is W = Fd where W is work, F is force and d is distance.
W = Fd
560J = F(15m)
F = 37.33 N
The answer is letter B.</span>
<span>A) cools down, slows down. When you put water in the freezer, it cools down and then the particles reduce their speed until they eventually form a solid by freezing.</span>
Answer:
when the student pushes the box up the ramp
Explanation:
Potential energy is energy possessed by a body by virtue of it's position.
Kinetic energy is energy possessed by a body by virtue of it's motion.
When the box is stationary, it poseses only potential energy. However, once it is being pushed up a ramp, it's potential energy is now converted into kinetic energy.
Answer:
1.06 m
Explanation:
The kinetic friction of the grass on the sled is the product of friction coefficient and the normal force, which equals to gravitational force. Let g = 9.81 m/s2:
So the deceleration caused by kinetic friction on the 60 kg sled is
If the sled on a speed of 2.5m/s and then subjected to a deceleration of 2.943 m/s2, then we can use the following equation of motion to find out the distance traveled by the sled before rest:
where v = 0 m/s is the final velocity of the sled when it stops, 
= 2.5m/s is the initial velocity of the can when it hits, a = -2.943 m/s2 is the deceleration, and 
is the distance traveled, which we care looking for:
The water is likely to be dirty or not clear enough. I mean, if you through a key into the body of water, you can't see the key at the bottom of the water body because of impurities which make the water look dirty or not visible or transparent enough.
