A tennis ball isdropped from 1.52m abovethe ground. It rebounds to a height of 0.918 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s2 . (Let down be negative.) Answer in units of m/s.
(part 2 of 3) With what velocity does it leave the ground? Answer in units of m/s.
(part 3 of 3) If the tennis ball were in contact with the ground for 0.0107 s, ﬁnd the acceleration given to the tennis ball by the ground. Answer in units of m/s2.
 👍
 👎
 👁
 ℹ️
 🚩
1 answer

(1/2) m v^2 = m g h
(1/2) v^2 = gh
or
v = sqrt (2 g h) (remember that for dropped object)
so
v at ground = sqrt (2*9.8*1.52)
now
goes up .918 meter
same deal in reverse
v up at ground = +sqrt (2*9.8*.918)
a = change in velocity/change in time
= [ +sqrt (2*9.8*.918)  sqrt (2*9.8*1,52) ] / 0.0107
note   is + 👍
 👎
 ℹ️
 🚩
answered by Damon
Answer this Question
Related Questions

PHYSICS
A ball thrown horizontally with speed vi = 26.0m/s travels a horizontal distance of d = 60.0m before hitting the ground. From what height h was the ball thrown? Which I got this answer below. h= 26.1 m How do I solve for the one below. If it takes a ball
 asked by Iris PHYS
 6,719 views

Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.8 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the
 asked by James
 3,970 views

college physics
a tennis ball is thrown straight up with an initial velocity of 22.5 m/s. it is caught at the same distance above the ground. a). how long does it take to reach its maximum height? b). how high does the ball rise? c). at what speed does it hit the ground?
 asked by confused
 15,656 views

Physics
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.10 m/s and rebounds with a velocity of 2.00 m/s. The ball remains in contact with
 asked by Cheng
 7,220 views

physics
A tennis ball with a speed of 12.5 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 11.4 m/s. If the ball is in contact with the wall for 0.0139 s, what is the average acceleration
 asked by john
 8,835 views

Physics Kinematics.
A ball is kicked with an initial velocity of 21 m/s in the horizontal direction and 16 m/s in the vertical direction. (Assume the ball is kicked from the ground.) (a) At what speed does the ball hit the ground? (b) For how long does the ball remain in the
 asked by Destiny
 5,923 views

precalc
Physics: a ball is thrown vertically upward with an initial velocity of 80 feet per second. the distance (in feet) of the ball from the ground after t seconds if s=80t16tt^2 a) draw the illustration b) for what time interval is the ball more than 96 feet
 asked by steph
 6,768 views

Physics/ Precalculus
If a ball is thrown upward from a building 30 m tall and the ball has a vertical velocity of 25 m/s, then its approximate height above the ground t seconds later is given by h(t) = 30 + 25t  5t^2 a. After how many seconds does the ball hit the ground? b.
 asked by Gerrad
 2,408 views

Maths
A ball is thrown vertically upwards at 3 m s1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to
 asked by Ed
 2,210 views

Math
A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 gt^2 is used to calculate the distance (d) the ball has fallen after t seconds. The constant g is the acceleration of gravity, 9.8m/s^2. How long does it take the ball to hit the
 asked by Lux
 992 views

Physics
A ball is dropped on to the floor from a height of 20m it rebounds to height of 10m if the ball is in contact with floor for 0.1 second what is the average acceleration during contact?
 asked by Sanmesh
 600 views

physics
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.30 m/s and rebounds with a velocity of 1.90 m/s. The ball remains in contact with
 asked by bb
 4,509 views

Physics
You are hitting a tennis ball against a wall. The 0.057kg tennis ball traveling at 29 m/s strikes the wall and rebounds at the same speed. Earth is the object of reference. Determine the ball's change in momentum (magnitude).
 asked by Anonymous
 4,560 views

PHYSICS
Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 57 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed of the ball as it leaves the racquet is 17 m/s and it
 asked by STEPH
 1,943 views

Math( help please ! )
The height of a ball thrown vertically upward from a rooftop is modelled by y=5t^2+20t+50 , where h(t) is the ball's height above the ground , in meters , at time t seconds after the throw a) Determine the max height of the ball b) how long does it take
 asked by Melissa
 3,132 views

Physics
A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the ground does the ball go? (c)
 asked by Sarah
 8,094 views

Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the
 asked by John
 11,835 views

Physics
A tennis player hits a 58.0g tennis ball so that it goes straight up and reaches a maximum height of 6.17m. How much work does gravity do on the ball on the way up? On the way down?
 asked by Carmen
 1,348 views

physics
A tennis ball is shot vertically upward in an evacuated chamber inside a tower with an initial speed of 20.0 m/s at time t = 0 s. Approximately how long does it take the tennis ball to reach its maximum height?
 asked by S
 4,352 views

Algebra 2
A ball is dropped from a height of 25 feet and allowed to continue to bounce until it eventually comes to a rest. Each time the ball bounces it rebounds to 45 of its previous height. After which bounce is the ball's rebound height 10.24 ft?
 asked by bre
 4,313 views
Still need help?
You can ask a new question or browse existing questions.