Projectile diagram with O 2 m above horizontal ground, a launch angle α°, a peak 3 m above the ground, and A on the descending path at the same height as O.

A ball is projected with speed $\text{ ms}^{-1}$ from the point $O$ , 2 m above the ground. The ball is projected from $O\,$ at an angle of $α∘\alpha^\circ$ . In the motion the ball reaches a maximum height 3 m above the horizontal ground and passes through the point $A\,$ 2 m above the ground and a horizontal distance of 8 m from $O$ .

Show that $U2sin⁡2α=19.6U^2\sin^2\alpha=19.6$ .

Find the value of $U$ .

Find the size of angle $α\alpha$ .

State one limitation of the model that could affect the accuracy of your answers.

Projectile diagram with O 2 m above horizontal ground, a launch angle α°, a peak 3 m above the ground, and A on the descending path at the same height as O.

Show that $U2sin⁡2α=19.6U^2\sin^2\alpha=19.6$ .

Find the value of $U$ .

Find the size of angle $α\alpha$ .

State one limitation of the model that could affect the accuracy of your answers.

Projectiles

Question 79

Markscheme

Projectiles

Question 79

Markscheme

Projectiles

Question 79

Projectiles Questions

Projectiles

Question 79

Projectiles Questions