# Question

A shot-putter launches the shot from a vertical distance of 2.0 m off the ground (from just above her ear) at a speed of 12.0 m/s. The initial velocity is at an angle of above the horizontal. Assume the ground is flat.

(a) Compared to a projectile launched at the same angle and speed at ground level, would the shot be in the air (1) a longer time, (2) a shorter time, or (3) the same amount of time?

(b) Justify your answer explicitly; deter-mine the shot’s range and velocity just before impact in unit vector (component) notation.

(a) Compared to a projectile launched at the same angle and speed at ground level, would the shot be in the air (1) a longer time, (2) a shorter time, or (3) the same amount of time?

(b) Justify your answer explicitly; deter-mine the shot’s range and velocity just before impact in unit vector (component) notation.

## Answer to relevant Questions

A ditch 2.5 m wide crosses a trail bike path (Fig 3.36). An upward incline of 15o has been built on the approach so that the top of the incline is level with the top of the ditch. What is the minimum speed a trail bike must ...A shopper is in a hurry to catch a bargain in a department store. She walks up the escalator, rather than let-ting it carry her, at a speed of 10 m relative to the escalator. If the escalator is 10 m long and moves at a ...A swimmer swims north at 0.15 m/s relative to still water across a river that flows at a rate of 0.20 m/s from west to east. (a) The general direction of the swimmer’s velocity, relative to the riverbank, is (1) north of ...An airplane flies due north with an air speed of 250 km/h. A steady wind at 75 km/h blows eastward. (Air speed is the speed relative to the air.) (a) What is the plane’s ground speed (vpg)? (b) If the pilot wants to fly ...During a daring rescue, a helicopter rescue squad initially accelerates a little girl (mass 25.0 kg) vertically off the roof of a burning building. They do this by drop-ping a rope down to her, which she holds on to as they ...Post your question

0