Answer:
The object is moving at constant speed.
Explanation:
The spaces between the dots are equal.
Assuming it is on a horizontal surface:
friction = μR
R = 20g (g is gravity 9.81)
so Friction = 0.085 x 20g
Work done is force x distance
so Work done = 0.085 x 20g x 28
= 466.956 J
Answer:
A
Explanation:
The roller coaster is stationary so the kinetic energy would be zero, but it is at the top of ramp so the potential energy would be high as its gravitational so it would have to be A
<span>Most of the earth's fresh water is stored as ice in the Arctic and Antarctic regions of the globe.</span>
156 is the answer. so 156.25 is almost the same thing, you just round. It's not hard. Thank you!!!
