Answer:
d
Explanation:
Ya gon find the Kenitic Energy first
K=½mv²===> K=½×0.2×(0.2)²===> 0.1(0.04)===> 0.004
and now the replacement:
0.004=½×0.4V²====> v²=0.02===> V=0.14m/s
Helping verbs come before the main verb, the main verb in the sentence is repair therefor the helping verb would be could.
The height of the ball after the given time of motion is 3.275 m.
The given parameters;
- initial velocity of the ball, u = 4 m/s
- height of fall of the ball, h = 2.5 m
- time of motion, t = 0.5 s
The distance traveled by the ball is calculated as follows;
Thus, the height of the ball after the given time of motion is 3.275 m.
Learn more here:brainly.com/question/21180604
Answer:
False
Explanation:
The force of an object does not depend on the dimensions of the said object. The formula for force is
F = Ma, where
m = mass and a = acceleration
The force is dependent on the size of the object and its acceleration. An object 2m by 5m running at a acceleration of x m/s² and weighing y kg will have the same force as another object 15m by 25m running at the same acceleration x m/s² and weighing y kg
Answer:
B
Explanation:
The total amount of mechanical energy in a closed system without friction or air resistance remains constant. In other words, in the absence of friction potential energy can become kinetic energy. This would mean that if you were to apply friction then the kinetic energy would be reduced. In simpler words, friction reduces the motion of an object.
For example, a skateboarder going down a dry ramp would have less friction stopping them than a skateboarder going down a muddy ramp.