John and Caroline go out for a walk one day. This graph represents their distance from home.Which statement accurately describes
their walk?
They walked uphill quickly, then they were still, then they walked downhill slowly.
They walked faster and faster until they walked at a constant rate, then they walked slower and slower.
They walked quickly, then they were still, then they walked slowly.
They walked in one direction, then they were still, then they walked in the opposite direction.
They walked uphill quickly, then they were still, then they walked downhill slowly.
They walked faster and faster until they walked at a constant rate, then they walked slower and slower.
They walked quickly, then they were still, then they walked slowly.
They walked in one direction, then they were still, then they walked in the opposite direction.
2 answers:
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Answer:
v = 0.489 m/s
Explanation:
It is given that,
Mass of a box, m = 1.5 kg
The compression in the spring, x = 6.5 cm = 0.065 m
Let the spring constant of the spring is 85 N/m
We need to find the velocity of the box (v) when it hit the spring. It is based on the conservation of energy. The kinetic energy of spring before collision is equal to the spring energy after compression i.e.
So, the speed of the box is 0.489 m/s.