If a car engine can do work on the car with a power of P, what will be the speed of the car at some time t if the car was at rest at time t=0? The speed is smaller if the mass of the car i...If a car engine can do work on the car with a power of P, what will be the speed of the car at some time t if the car was at rest at time t=0? The speed is smaller if the mass of the car is greater (the acceleration of the car will be less if the mass of the car is larger). In Example 7.3.2, it's asking for the power that you are expending by pushing on the crate (which is the same as asking for the rate of the work done by you on the crate).
