Answer:
Thus, the velocity at the time of strike is same as the velocity at the time of projection.
Explanation:
Let a projectile is projected vertically upwards with a speed of u and reaches to the maximum height H.
At maximum height , the speed is zero and then the projective comes back on the ground.
Use the third equation of motion

Now let the velocity at the time of strike is v'.
Use third equation of motion, here initial velocity is zero.

Thus, the velocity at the time of strike is same as the velocity at the time of projection.
The answer is C, because they moved from a stand still to down the hill
Grams, Milligram, Microgram.
Radio waves
infrared
x-rays
and red and blue light are not a thing, their on a color spectrum called visible light.
Answer:
b. 3 m
Explanation:
The computation of the distance travelled is shown below:
As we know that
Work done = Horizontal Force × distance travelled
360 J = 120 N × discount travelled
So, the distance travelled is
= 360 J ÷ 120 N
= 3 m
hence, the correct option is b. 3 m