physics
posted by Anonymous .
A child drops a ball from a height of 10 m. Assume its acceleration increases uniformly at the rate of 10m/s2. find the velocity with which the ball strikes the ground. Find the time taken to the ball reach the ground.

V^2 = Vo^2 + 2g*h = 0 + 20*10 = 200
V = 14.14 m/s.
0.5g*t^2 = 10 m.
5t^2 = 10
t^2 = 2
t = 1.414 s.
Respond to this Question
Similar Questions

Physics
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.00 m/s and angle of 20.0 degrees below the horizontal. It strikes the ground 3.00 s later. (a) If the base of the building … 
Physics
A ball is projected upward at time t= 0.0s, from a point on the roof 10m above the ground. The ball rises, then falls until it strikes the ground. The initial velocity of the ball is 58.5 m/s. At time t=5.97s, what is the approximate … 
Physics
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. Initial velocity components: vx = … 
physics
A child drops a ball from a height of 10 m. Assume its acceleration increases uniformly at the rate of 10m/s2. find the velocity with which the ball strikes the ground. Find the time taken to the ball reach the ground. 
physical
A ball is dropped from the roof a building which is 256m high.The height h of the ball at any instant t is described by h(t)= 16tsqure+256 Find 1)Instantaneous velocity of ball at t= 3sec 2)The time taken by ball to reach the ground … 
math
A ball is dropped from the roof a building which is 256 m high. The height h of the ball at any instant t is described by h(t) = – 16t2 + 256 Find i) Instantaneous velocity of ball at t = 3 seconds ii) The time taken by ball to reach … 
physics
1.A ball is dropped from the height of 20m.calculate (i) the time taken by the ball to reach the ground. (ii) the velocity with which the ball strikes the ground. 
Scince
A person is standing on 60m height per hour he throw one ball upwards with u=10m/s then find when the ball reach ground and velocity with which the ball strikes the ground 
Quadratic equations
A ball is thrown vertically upwards From the top of a building of height 29.4 m and with an initial velocity 24.5 m/sec. If the height H of the ball from the ground level is given by H = 29.4 + 24.5t  4.9t², then find the time taken … 
Quadratic equations
A ball is thrown vertically upwards From the top of a building of height 29.4 m and with an initial velocity 24.5 m/sec. If the height H of the ball from the ground level is given by H = 29.4 + 24.5t  4.9t², then find the time taken …