A 100-g toy car is propelled by a compressed spring that starts it moving. The car follows the curved track in Figure 7.39. Show that the final speed of the toy car is 0.687 m/s if its initial speed is 2.00 m/s and it coasts up the frictionless slope, gaining 0.180 m in altitude.
Step-by-step solution Step 1 of 1 The potential energy gained by the toy car at the height is, The change in the kinetic energy of the toy car is According to the work energy theorem Or Therefore, Or Substitute for , for , and for in the above equation. Hence, the final speed of the car is .