I believe that formula is incomplete, if it is derived from the kinematic equations.
The full formula being
where:
s is the displacement (or how far she travelled in your question)
u is the initial velocity, which I think can be assumed to be 0 m/s
t is the time taken which is 120 s
a is the acceleration due to gravity which points down in a negative y direction, which is -9.8 m/
Since initial velocity, u, is assumed to be 0 m/s the equation becomes:
Substitute in a = -9.8m/ and t = 120 s and calculate your answer.
Tell me what you calculate the answer to be (don't forget units) and I'll let you know if it's right.
Answer:
v=343m/s
Explanation:
We have to take into account the expressions
if we assume that 256Hz is the fundamental frequency we have
and for wavelength
hope this helps!!
Answer:
which is the most suitable place for growing large amounts of sugar cane
Answer:
Mass, m = 32 kg
Explanation:
Given that,
Force, F = 2000 N
The change in velocity, (v-u) = 50 m/s
Time, t = 0.8 s
We need to find the mass of the ball. The net force acting on an object is given by :
F = ma
Where a is acceleration
So, the mass of the ball is 32 kg.