Question

A 0.4 kg football is kicked at a 60 degree angle with an initial speed of 22 m/s. If the speed at the top of its path is 10 m/s, what is the work done by air resistance?

Answer #1

A football is kicked from ground level with an initial velocity
of 24.2 m/s at angle of 51.0° above the horizontal. How long, in
seconds, is the football in the air before it hits the ground?
Ignore air resistance.

A
soccer ball is kicked with an initial speed of 15 m/s at an angle
of 53 degrees above the horizontal from the top of a building. If
air resistance is negligible then how far does the ball travel
horizontally from the edge of building by the time it hits the
ground ?

A football is kicked with a speed of 20 m/s at an angle of 37
degrees to the ground.
● (a) What is the maximum height that it reaches?
● (b) How far has it travelled horizontally when it reaches its
maximum height?
● (c) What is the total time the football spends in the air?

A 0.415-kg soccer ball is kicked at an initial speed of 32.0 m/s
at an angle of 40.0° to the horizontal. What is the kinetic energy
of the soccer ball when it has reached the apex of its
trajectory?
J

A football is kicked at a 27 degree angle to the ground, travels
horizontally for 20 meters before hitting the ground 6.2 seconds
after it was kicked. a) What was the magnitude of the initial
velocity? b) What was the maximum height the ball achieved?

A
football is kicked at an angle of 30 degrees with an initial
velocity of 28 m/s. how high does it go? How far away from the
kicker does the football land?

a football is kicked at ground level with a speed of 18 m/s at
an angle os 31 degrees to the horizontal How much later does it hit
the ground?

ball is kicked with an initial speed of 10 m/s above the
horizontal with an initial angle 30 degree. What is the maximum
height this projectile motion? What is the speed of the ball at its
maximum height? How long does it take the ball to reach the maximum
height? What is the speed of the ball when it hits the ground? What
is the magnitude of the acceleration of the ball when it is at the
maximum height?

An object with a mass of 40.0 kg is fired with an initial speed
of 1.28 x 102 m/s at an angle of 30.0° above the
horizontal from a 116 m high cliff (take ground level to be
y = 0 m).
(a) Determine the initial total mechanical energy of the
projectile.
(b) If when the projectile is at its maximum height of
y = 287 m, it is traveling 90.7 m/s, determine the amount
of work that has been...

A 4 kg mortar shell is fired at an angle of 60° above the
horizontal with an initial speed of v0. At its highest point its
speed is 120 m/s. (a) At this highest point, what is the change in
its gravitational potential energy relative to its initial launch
position? Neglect air resistance? (b) How far above the launch
point did the mortar travel to get to its highest point? Neglect
air resistance

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