13 s.Which of the diagrams below shows the A ball rolls off a cliff at a constant velocity of most likely trajectory the ball will follow? B

a projectile is fire horizontally outward from the top of a table. The initial height of the bullet above the ground is 5.0 meters and the bullet travels a horizontal distance of 8.0 meters before hitting the ground. Draw an accurate diagram showing the motion of the projectile. Calculate the  a. time the bullet was in the air b. the initial velocity of the projectile

1. According to legend, George Washington threw a silver dollar across the Potomac River, which is about 1600 m (1 mile) wide. For this problem, assume projectile motion and that the quarter was thrown at an angle of 45° and it landed at the same height it was thrown. A. How fast would he have had to throw the silver dollar to make it across the Potomac? B. Assess your answer from part a). Does this seem like a plausible feat?

A newly constructed spaceship has a length of 100.0 m (as measured in the rest frame). This spaceship departs the Earth, bound for a distant planet located a distance D = 50.0 light-years away from the Earth. It travels at a constant speed of v = 0.900c.   Part A) As measured by Mission Control on Earth, how long does the journey take? Enter the numerical value in units of years. Part B) According to an astronaut on the spaceship, how long does the journey take? Enter the numerical value in units of years. Part C) As measured by Mission Control on Earth, what is the spaceship's apparent length? Enter the numerical value in SI units

An athlete threw the ball at an angle of 30° up and the left from the ground at a velocity of 90 m/s. a. What was the horizontal velocity of the ball? b. What was the vertical velocity of the ball?

Suppose a fast-pitch softball player does a windmill pitch, moving her hand through a circular arc with her arm straight. She releases the ball at a speed of 30.9 m/s (about 69.1 mph). Just before the ball leaves her hand, the ball's radial acceleration is 331 m/s?. What is the length of her arm from the pivot point at her shoulder? m length: