Posted by **John** on Friday, May 30, 2014 at 10:22pm.

A projectile is launched at an angle of 34.0o above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. a) What is the initial kinetic energy of the projectile? b) By how much does the gravitational potential energy of the projectile change as the projectile moves from its initial position to the highest vertical point in its motion? c) What is the maximum height reached by the projectile?

- Physics -
**MathMate**, Saturday, May 31, 2014 at 7:02am
(a)

KE=(1/2)mv²

(b)

At maximum height,

KE in y-direction = 0, i.e.

loss in KE

=(1/2)m(v sin(θ))²

(c)

Maximum height, h

equate mgh to loss in KE, or

mgh = (1/2)m(v sin(θ))²

Solve for h.

## Answer This Question

## Related Questions

- Physics - A projectile is launched with an initial speed of 80.0m/s at an angle ...
- Physics Projectile Motion - A projectile is launched at ground level with an ...
- Physics - A projectile is launched with an initial speed of 40m/s at an angle of...
- Physics - A projectile is launched with an initial speed of 59.0 m/s at an ...
- Physics- i need to know how to do these problems - Two projectiles are launched ...
- Physics - A projectile is launched at an angle of 20.0 degrees above the ...
- Physics - A projectile is launched with an initial speed V0. At its highest ...
- Physics - A projectile is launched with an initial speed . At its highest point...
- Physics - What is the kinetic energy of an ideal projectile of mass 19.4 kg at ...
- physics - A projectile is launched with an initial speed of 70 m/s at an angle ...

More Related Questions