A ball is thrown vertically upwards with an initial velocity of 15 m s¹¹. Assuming air resistance to be negligible, calculate: a) the time taken for the ball to reach its maximum height. b) the maximum height reached by the ball c) the speed of the ball when it was 6.0 m above its point of release
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- Does the escape speed for an object at the earth’s surface depend on the direction in which it is launched? Explain. Does your answer depend on whether or not you include the effects of air resistance?4.6 Q15You ski straight down a 40.6 degree slope, starting from rest and traveling a distance of 11.3m along the slope . Find your final velocity, assuming negligible air resistance and friction?
- A baseball is projected horizontally with an initial speed of 5.93 m/s from a height of 1.73 m. What is the speed of the baseball when it hits the ground? (Neglect air friction.)A ski jumper starts from rest 42.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 10.5 m above the ground. Neglect air resistance. (a) What is her speed when she leaves the track? (b) What is the maximum altitude she attains after leaving the track? (c) Where does she land relative to the end of the track?Page 6 of 8 6. A projectile is fired at v, = 381.0 at an angle of 9 = 66.0° with respect to the horizontal. Assume that air friction will shorten the range by 32.1%. How far will the projectile travel in the horizontal direction, R?
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