A roller coaster starts from rest at the top of a drop and accelerates at a rate of 5.0 m/s2 for 2.0 sec. When it
reaches the bottom of the drop point, it's velocity will be m/s. Record your answer to 2 significant digits

2.5 m/s.

Explanation:

At rest, acceleration = 0

At the top of the drop acceleration = 5.0 m/s2

Rate of acceleration = (5.0 m/s2 - 0) = 5.0m/s^2

Time taken for travel = 2.0 sec

At the bottom of the drop point, the velocity will be (Change in acceleration / time taken)

i.e (5.0 m/s2 / 2.0 seconds)

= 2.5 m/s

Thus, the velocity of the rollercoaster will be 2.5m/s.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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