A toy car coasts along the curved track shown above

Asked by admin @ in Physics viewed by 308 People

A 100-g toy car is propelled by a compressed spring that starts it moving. the car follows a curved track. what is the final speed of the toy car if its initial speed is 2.00 m/s and it coasts up the frictionless slope, gaining 0.180 m in altitude.

Answered by admin @


Answer:

0.687 m/s

Explanation:

Initial energy = final energy

1/2 mu² = mgh + 1/2 mv²

1/2 u² = gh + 1/2 v²

Given u = 2.00 m/s, g = 9.8 m/s², and h = 0.180 m:

1/2 (2.00 m/s)² = (9.8 m/s²) (0.180 m) + 1/2 v²

v = 0.687 m/s


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