Answer:4.95 m/s
Explanation:
Given
Ball rises to a height of 1.25 m
Let u be the velocity of player while leaving ground .
Its final velocity will be zero as he reaches a height of 1.25 m
thus
u=4.952 m/s
Answer:
<em>1,839.375 Joules</em>
Explanation:
Work is said to be done is the force applied to an object cause the object to move through a distance.
Workdone = Force * Distance
Workdone = mass * acceleration due to gravity * distance
Given
Mass = 75.0kg
acceleration due to gravity = 9.81m/s²
distance = 2.50m
Substitute the given parameters into the formula:
Workdone = 75.0*9.81*2.50
Workdone = 1,839.375Joules
<em>Hence the workdone is 1,839.375 Joules</em>