Question

A baseball is thrown up in the air from a height of 3 feet with an initial velocity of 23 feet per second. What is the maximum height of the baseball and when does it reach this height?
A)
The maximum height is 11.3 feet and it reaches this height at 0.72 seconds
B)
The maximum height is 2.35 feet and it reaches this height at 29.98 seconds
C)
The maximum height is 135.25 feet and it reaches this height at 11.50 seconds
D)
The maximum height is 11.50 feet and it reaches this height at 135.25 seconds.

Answer 1

Post it in physics section next time
You got to use these equations and facts to solve this question

1)\[s=ut+\frac{1}{2}at^2\]
s-->distance travelled in m
t-->time in sec
a-->acceleration in ms^(-2)

2)v=u+at
v--->Final velocity
u-->initial velocity

3) final Velocity at maximum height is 0

Now try :D

Answer 2

lol ^ his givens are in feet...thereby not m/s^2 for a...

Answer 3

if you want to be cool, take the first derivative set it = 0 and then plug that x into the original equation....then you will have max height

Answer 4

@bonoballa , sharp observation :D