A Level Physics

OCR A Level Physics A. Learn each unit step by step, then run the practicals.

A level Physics · Motion · Projectile motion

Projectile motion

Fire a projectile horizontally from a cliff, at an angle from a cliff, or at an angle from level ground. The horizontal and vertical motions are independent: constant velocity across, constant acceleration g downwards. Air resistance is ignored.

Scale 1 : 1 Strobe images every 0.20 s Set the launch conditions, then fire.

Launch type

Launch speed u 15.0 m s⁻¹

Angle above horizontal θ 30°

Cliff height h 20.0 m

Gravity g

Playback

Strobe interval

Velocity arrows Grid Keep old paths Predict first

t / s0.00

x / m0.0

height / m0.0

v_x / m s⁻¹0.0

v_y / m s⁻¹0.0

Worked solution

Up is positive · origin at the launch point

Work out your predictions, enter them on the right, then fire to reveal the solution.

Your predictions

Calculate before you fire. Answers within 2% count as correct.

Flight time / s Range / m Max height / m

Results appear after the projectile lands.

Try these

Key equations

v = u + at

s = ut + ½at²

v² = u² + 2as

s = ½(u + v)t

Use them separately for each direction. Horizontally a = 0, so s = u_xt. Vertically a = −g. Time t is the only quantity shared by both directions.