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In the figure, a runaway truck with failed brakes is moving downgrade at 127 km/h just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of θ = 20∘. The truck's mass is 1.5×104 kg. (a) What minimum length L must the ramp have if the truck is to stop (momentarily) along it? (Assume the truck is a particle, and justify that assumption. ) Does the minimum length L increase, decrease, or remain the same if (b) the truck's mass is decreased and (c) its speed is decreased? (a) Number Units (b) (c)

In the figure, a runaway truck with failed brakes is moving downgrade at 127 km/h just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of θ = 20∘. The truck's mass is 1.5×104 kg. (a) What minimum length L must the ramp have if the truck is to stop (momentarily) along it? (Assume the truck is a particle, and justify that assumption. ) Does the minimum length L increase, decrease, or remain the same if (b) the truck's mass is decreased and (c) its speed is decreased? (a) Number Units (b) (c)

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In the figure, a runaway truck with failed brakes is moving downgrade at 127 k m / h just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of θ = 20 ∘ . The truck's mass is 1.5 × 10 4 k g . (a) What minimum length L must the ramp have if the truck is to stop (momentarily) along it? (Assume the truck is a particle, and justify that assumption.) Does the minimum length L increase, decrease, or remain the same if (b) the truck's mass is decreased and (c) its speed is decreased? (a) Number i Units (b) ◻ (c) ◻

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