Complete the passage to summarize factors affecting the speed of a wave. The material or substance that a wave moves through is
2 answers:
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Answer:
See the explanation below.
Explanation:
Work in physics is defined as the product of force by the distance that the body travels in the direction of the force.
It can be represented by means of the following equation.
where:
W = work [J]
F = force [N]
d = distance [m]
In the given example the work is zero since the tree does not move, therefore the bear exerts a force on the tree. But there is no talk of movement of the tree, therefore the work is zero.
Answer:
v=22.5 m/s
Explanation:
Given that,
Initial speed, u = 0
Acceleration, a = 2.5 m/s²
Time, t = 9 s
We need to find how fast the car is moving i.e. its final speed. So,
u = 0
So,
v = at
v = 2.5 m/s²× 9
v=22.5 m/s
So, the final speed of the car is 22.5 m/s.