# Physics

posted by .

A projectile is launched from ground level with an inital velocity of 50 m/s at an angel of 60 degreess aove the horizontal. Use g=10m/s. What is the max height reached by the projectile?

I used change in y=voyt +1/2at^2
=50(2.4) + 1/2(=10) (2.5)^2
=125-31.25
=93.75m

I was just wondering if i did this correctly.

b) What is the vertical component of the final velocity right before the projectile returns to the ground?

I used vy= v sin theda
but my roblem with this is what would v equal to ?

• Physics -

a) yes, but I wonder how you got the time to max height.

b) I have no idea what "right before...returns to ground" means. The wording is very poor. In physics, we consider gravity returning the projectile to ground starting at launch and working until it strikes the ground.

## Similar Questions

1. ### Physics- i need to know how to do these problems

Two projectiles are launched from the ground, and both reach the same vertical height. However, projectile B travels twice the horizontal distance as projectile A before hitting the ground. a. How large is the vertical component of …
2. ### Science

A horizontal projectile with mass of 19.0kg is launched from a height of 7.0m above ground level with a horizontal speed of 250.0m/s. A)During projectile's flight, what forces are acting on it?
3. ### physics

three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile?
4. ### physics

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect …
5. ### physics

A projectile is launched from ground level at 37.0 m/s at an angle of 30.6 ° above horizontal. Use the launch point as the origin of your coordinate system. a)How much time elapses before the projectile is at a point 8.9 m above the …
6. ### physics

A projectile is launched from ground level at 37.0 m/s at an angle of 30.6 ° above horizontal. Use the launch point as the origin of your coordinate system. (a) How much time elapses before the projectile is at a point 8.9 m above …
7. ### Physics

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?
8. ### Physics

Projectile motion problem where a projectile is launched from level ground and lands on level ground. I have to use the kinematic equations to show that the time it takes for the projectile to reach its maximum height is equal to one …
9. ### Physics Projectile Motion

A projectile is launched at ground level with an initial speed of 51.5 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.50 seconds later. What are the x and y distances from where the projectile …
10. ### physics

A projectile is launched from and returns to ground level, as the figure shows. There is no air resistance. The horizontal range of the projectile is measured to be R= 166 m, and the horizontal component of the launch velocity is v0x …

More Similar Questions