First we need to find the time in the air
d = 1/2gt^2 + vt
Since there is no inital vertical velocity
4.1 = 1/2 (9.8) t^2
8.2/9.8 = t^2
0.8367 = t^2
t = 0.9147s
Now we multiply by speed
7m/s x 0.9147s = 6.4m
Answer:
Potential energy is stored energy that is stationary. Kinetic energy is energy in motion
Explanation:
Examples:
A car moving forward down a hill is kinetic energy
A car about to go down a hill after reaching the top is potential energy.
Hope I helped :)
The problem is a free fall problem as the camera drops. The vertical velocity is zero. It is the action of gravity that takes place here. To calculate the time it takes to reach the ground, we do as follows:
t = √2y/g = √(2)(70)/9.81 = 3.78 s
The velocity as it impacts the ground would be,
v = √2gy = 37.04 m/s
Hope this helps.
Answer:
51.04 joules
Explanation:
The movement by the gloves = 11cm
Force by the baseball = 464N
First of all we are going to convert cm to metres
11cm = 11/100 meters = 0.11m
The formula for workdone is given as:
W = f x d
W = workdone
F = force
D = distance
Workdone = 464 x 0.11
= 51.04 joules
The workdone by the ball is 51.04 joules
Thank you