Find the mass m of the counterweight needed to balance a truck with mass M = 1 580 kg truck on an incline of θ = 45°. Assume both pulleys are frictionless and massless.

After an atomic bomb has been dropped, the damage continues to get worse. why is this?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?