An object was thrown at a certain angle above the ground. It reaches a maximum height of 42.50 meters and hits back the ground 76 meters 1.find the time of flight
2.what is the initial velocity
3.find the angle of the projectile

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

The two required components for a generator are

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.