Physics.. please help!!!!!

posted by .

A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below.
The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball hits nothing while in flight and air resistance is negligible. The acceleration due to gravity is 9.8 m/s^2.
Determine the time it takes for the ball to reach the plane of the fence.
Answer in units of seconds.

How far above the top of fence will the ball pass? Consider the diameter of the ball to be negligible

What is the vertical component of the velocity when the ball reaches the plane of the fence? Answer in units of m/s

Please help, this is college physics!!! thank you!

  • Physics.. please help!!!!! -

    The horizontal velocity component, which does not change, is
    Vx = Vo cos46 = 11.11 m/s. Divide the distance to the fence by Vx to obtain the flight time to the plane of the fence.

    Use that time (t) and the equation for height above the ground (given below), to find out how far whether, or by how much, the ball clears the fence.

    y = (16 sin46)t - (g/2)*t^2

    For the vertical component of V,

    Vy = 10 sin46 - gt

  • Physics.. please help!!!!! -

    That is not right drwls

  • Physics.. please help!!!!! -

    The third question is wrong...

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    a ball of mass 0.2 kg, initially at rest, is kicked directly toward a fence from a point 20m away. The velocity of the ball as it leaves the kicker's foot is 20m/s at angle of 40º above the horizontal ground. The top of the fence …
  2. Physics

    A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The …
  3. physics

    A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18 m/s at angle of 35 degrees above the horizontal. The …
  4. physics

    a ball of mass 0.4 kg is initially at rest on the ground. It is kicked and leaves the kicker's foot with a speed of 5 m/s in a direction of 60 degrees above the horizontal. What is the impulse
  5. Physics

    This is a projectile motion question. A ball with a mass of .4 kg, initially at rest is kicked directly toward a 3 meter fence from a point 20 meters away. The initial velocity is 17 m/s at an angle of 35 degrees. The ball is hit by …
  6. Physics

    4. A ball is kicked toward a fence from a point 32 meters away. The velocity of the ball as it leaves the kicker’s foot is 24 m/s at an angle of 37 degrees above the horizontal. The top of the fence is 2.0 meters high. Assuming air …
  7. Physics

    A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18 m/s at angle of 58◦ above the horizontal. The …
  8. Physics

    PLEASE help! This is due tomorrow, and I really need to know how to do it. A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the …
  9. Physics

    A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away. The velocity of the ball as it leaves the kicker's foot is 17 m/s at angle of 45 degrees above the horizontal. The top of the fence …
  10. Physics

    A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker's foot is 17 m/s at angle of 35 degree above the horizontal. The top …

More Similar Questions