A ball is thrown out of a window 18m off the ground. It is thrown horizontally at 0.5m/s. Show that it takes about 2s to reach the ground

Using the initial information we can see that the acceleration in the 'y' direction is equal to 'g', so from this we can work out the velocity in the 'y' direction 'V(y)' by simply integrating the acceleration with respect to time; so V(y) = 9.8t +c and as the ball is initially at rest c=0. By intergrating the velocity in the y direction V(y) we can then obtain the displacement in the y direction 'S(y)'. So S(y)=0.5gt2+k. Now as we are taking the window as the origin k=0. So S(y)=0.5gt2. When the ball hits the ground the displacement it 18m or S(y)=18. Using our formula for S(y), we can solve for t. t comes out to be 1.92 to 2 d.p, which is roughly 2.

AJ
Answered by Adam J. Physics tutor

3940 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

State Ohm's Law and the main characteristics of ohmic conductors, giving examples


A cable with a diameter of 6mm is used to lift crate. Calculate the mass of the crate required to create a stress of 350 MPa.


If photons are little particles emitted by atoms, where were they before they got emitted?


What is an inertial frame of reference?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences