Explanation:
Work done is given by the product of force and displacement.
Case 1,
1. A boy lifts a 2-newton box 0.8 meters.
W = 2 N × 0.8 m = 1.6 J
2. A boy lifts a 5-newton box 0.8 meters.
W = 5 N × 0.8 m = 4 J
3. A boy lifts a 8-newton box 0.2 meters.
W = 8 N × 0.2 m = 1.6 J
4. A boy lifts a 10-newton box 0.2 meters.
W = 10 N × 0.2 m = 2 J
Out of the four options, in option (2) ''A boy lifts a 5-newton box 0.8 meters'', the work done is 4 J. Hence, the greatest work done is 4 J.
Hvcc you and I I don’t have any friends to go on tt for me I’m not
Answer:
It would take 3 seconds approximately.
Explanation:
since it's going to stop it's final velocity is 0m/s
Now,
acceleration = (v-u)/t
or, a = (0-35)/t
or, -12 = -35/t
or, t = -35/-12
so, t = 2.9 seconds.
<span>The shape of star dunes is mostly due to variable wind directions. Due to the fact that the wind is blowing from many sides and hitting the dune, the sand accumulates in such a way that it forms star dunes. The amount of vegetation, variable wind speeds, and the amount of sand do not affect the formation of star dunes, but rather the direction of the winds does.</span>
