Assuming constant acceleration or that you want average acceleration, you can use the formula:
acceleration = change in velocity / time
=> acceleration = [ 50 m/s - 15 m/s] / 4 s
acceleration = (35 m/s ) / 4s = 8.75 m/s^2
Answer: 8.75 m/s^2
Color travels in waves, which are loosely divided into short, medium and long in length. Because colors travel at different wavelengths, some are easier to see than others, but the amount of light is also a factor. In general, however, green is the most visible color from a distance, so yes there is.
Answer:
when the radius is halved, F becomes 4 times
Explanation:
<u><em>The formula is given by</em></u>
<u><em>When r is halved:</em></u>
=>
=>
<u><em>This means when the radius is halved, F becomes 4 times</em></u>
Answer:
W = 7000 J
Explanation:
To solve this problem we use that the speed of the bicycle is constant, therefore its acceleration is zero
F -fr = 0
F = fr
where F is the force applied by the child
Work is defined by
W = F. x
W = F x cos θ
in this case the child's force is parallel to the movement, therefore the angle is zero and cos 0 = 1
let's calculate
W = 35 200
W = 7000 J