A car starts from rest and moves around a circular track of radius 31.0 m. Its speed increases at the constant rate of 0.410 m/s2. (a) What is the magnitude of its net linear acceleration 13.0 s later

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.