A) change in ht after 180m = 180 * sin(4-deg.) = 12.56m
net work done by gravity on the cyclist = mass * gravity * height diff.
= 85 * 9.8 * 12.56
= 10470J
= 10.5kJ
B) Kinetic energy = 1/2 * mass * vel.^2 = work done by gravity = 10470J
vel.^2 = 10470 * 2 / 85 = 246.4
vel. = 15.7m/s
Answer:
1. 8.0kg * m/s
2. The same as before the collision
3. The force will decrease
4. 14 m/s
Ok so basically you have to look at the work and then look at the work and then it will show
Answer:
We show concern and show support
