A baseball player is running at a constant velocity on a level field and tosses

Question

A baseball player is running at a constant velocity on a level field and tosses a baseball straight up. When the ball comes back down, it will land O In front of the baseball player Directly in the baseball player's glove. Behind the baseball player Question 2 A ball is thrown from a jungle gym at an angle 12.0 above the horizontal. The instant after the ball is thrown, the magnitude of its acceleration is OLess than g. Greater than g. Equal to g Question 3 Which of the following quantities are constant for a projectile during it's flight? Select all that are true 2 ar Question 4 A missile is fired over horizontal ground at an angle of 1.00. At what point on the trajectory are vand a perpendicular to each other? At the end of the trajectory. O There is no point where vand a are perpendicular to each other O At the top of the trajectory

Explanation / Answer

1.

Since before the upward throw, ball was in player's hand and it was moving with same horizontal velocity as of baseball player, So after the vertical throw it will have this same horizontal velocity and since there is no acceleration in horizontal direction, So it will travel same distance as player. So Ball will land directly in baseball player's glove.

Correct option is B.

2.

In projectile motion

There is no horizontal acceleration, So ax = 0

In vertical direction acceleration is constant and equal to 'g'

Correct option is C.

3.

In projectile motion,

There is no horizontal acceleration, So ax = 0, which means ax is constant.

In vertical direction acceleration is constant and equal to 'g', which means ay is constant

Since ax = 0, So velocity in x-direction will remain constant, Vx = Constant.

Correct options are A, E and G

4.

In projectile motion, at the top of the trajectory, there will be only velocity in horizontal direction and velocity in vertical direction will be zero.

So at the top of trajectory, V will be in x-direction

Now we know that acceleration will only be in vertical direction and cequal to 'g'

So at the top V and ay will be perpendicular.

Correct option is C.

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