If two rockets were fired simultaneously at the same height. Which will hit the ground first, the one with greater angle or the one with lower angle?

Suppose a cannon, placed on a moving cart with negligible friction in the wheel bearings, projects a cannonball straight up in the air. What would be the horizontal velocity of the ball relative to the rider of the cart?

If the stone had been thrown front the cliff too with the same initial speed and the same angle, but above the horizontal, would it’s impact velocity be different?

Consider a projectile being launched with an initial speed of 43 m/s at a variety of initial angles. Refer to the figure. What is the range, in meters, of the projectile if it is launched at an angle of θ1 = 79.7°?  What is the range, in meters, of the projectile if it is launched at an angle of θ2 = 40.5°?  What is the range, in meters, of the projectile if it is launched at an angle of θ3 = 90 − 79.7°, the complement of θ1?

Children playing in a playground on the flat roof of a city school lose their ball to the parking lot below. One of the teachers kicks the ball back up to the children as shown in the figure below. The playground is 4.80 m above the parking lot, and the school building's vertical wall is h = 6.30 m high, forming a 1.50 m high railing around the playground. The ball is launched at an angle of 0 53.0° above the horizontal at a point d 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) = = (a) Find the speed (in m/s) at which the ball was launched. x What trigonometric function should you use to find the x-component of the initial velocity? m/s

A quarterback throws a football toward a receiver with an initial speed of 11 m/s at an angle of 30° above the horizontal. At that instant the receiver is 15.0 mfrom the quarterback. (a) In what direction should the receiver run in order to catch the football at the level at which it was thrown? The receiver should run in the direction opposite to that in which the football is traveling  Or  The receiver should run in the direction the football is traveling ?   (b) With what constant speed should the receiver run in order to catch the football at the level at which it was thrown? Find m/s

When the red kangaroo of Australia is moving at full speed, it can bounce at a speed of 8.50 meters per second, at an angle of 45.0o above horizontal. Assuming the kangaroo is bouncing on level ground, how far will the kangaroo travel in a single bounce?

You aim a rifle horizontally in a perfectly flat field while your friend holds a bullet at the same height as your rifle. You fire the rifle and your friend simply opens her hand simultaneously, allowing the bullet to drop. Your friend claims that both bullets hit the ground at the same moment. Do you agree? Justify your answer. Ignore air resistance.

A gun is mounted on a cliff a distance (h) above a level field. It fires a projectile with a velocity (v0) at an angle above the horizontal (a). Find the horizontal range (R), the distance along the field from the base of the cliff where the projectile lands.

a fireman d=31.0 m away from a burning building directs a stream of water from a ground-level hose at an angle of 0i=26.0 degrees above the horizontal. if the speed of the stream as it leaves the hose is vi=40.0 m/s, at what height will the stream of water strike the building?