Yes. I think it is. If you are wasting your time staring at a wall, but you are enjoying it and still have work to do, you are wasting your time. Sometimes the point of wasting time is to, well waste time, but that doesn’t change the fact that you are wasting your time.
Answer:
The ball reaches a maximum height of 196ft above the point where it was launched.
Explanation:
Please see attachment below.
Answer:
Explanation:
Frictional force acting on the child = μ mg cosθ
, μ is coefficient of kinetic friction , m is mass of child θ is inclination
work done by frictional force
μ mg cosθ x d , d is displacement on inclined plane
work done = .13 x 276 x cos34 x 5.9
= 175.5 J
This work will be converted into heat energy.
b ) Initial energy of child = mgh + 1/2 m v ² , h is height , v is initial velocity
= 276 x 5.9 sin34 + 1/2 x 276 / 9.8 x .518² [ mass m = 276 / g ]
= 910.59 + 3.77
= 914.36 J
loss of energy due to friction = 175.5
Net energy at the bottom
= 738.86 J
If v be the velocity at the bottom
1/2 m v² = 738 .86
.5 x (276 / 9.8) x v² = 738.86
v² = 52.47
v = 7.24 m /s .
Probably not strong because the car weights 2000 more than the rope
M=2.45 because you multiply out the equation on the right and divide by 10