A ball is projected vertically upwards with a speed of 20 m s-1 from a point h metres above the ground. The ball hits the ground 5 s later. Find
(a) the value of h,
(b) the speed of the ball as it hits the ground.
Question 7
7.
A car passes point A with a speed of 20 km/h. The car accelerates at a constant rate and 10 seconds later it passes point B with a speed of 70 km/h. Find
(a) the acceleration of the car in ms-1,
(b) the distance AB.
Question 8
8.
A stone is dropped from a point 120 m from the ground. Find
(a) the time it takes for the stone to reach the ground,
(b) the speed at which the stone hits the ground.
Pick the correct SUVAT Equation and change the subject of the equation to facilitate finding what is asked in the question.
