a ball is dropped from rest off a cliff of height 50m, determine the final velocity of the ball assuming no air resistance.
Consider the appropriate equation of motion to solve this (use SUVAT method). The equation v^2=u^2+2as is appropriate to solve. Substituting in the knowns gives v=+sqrt(29.8150)=31.32 which, quoted to the correct number of significant figures is 30m/s
CJ
Related Physics A Level answers
All answers ▸What is the change in temperature of 2kg of water heated by a kettle using a voltage of 230V at 0.5A of current for 10 seconds? Assume no heat losses.
When a 470 micro farad capacitor is discharged through a fixed resistor R, the pd across it decreases by 80% in 45 s. Calculate the time constant of the circuit
Explain Rutherford's alpha particle scattering experiment and what it provided evidence for
Why the Newton's second law of motion important?