Answer:
The speed of sound can be gotten by simply finding the average of the results.
=0.756s
It is advisable for the students to repeat 5 times because it allows them to (a) estimate the variability of the results (how close to each other they are) and (b) to increase the accuracy of the estimate.
If an object is consist of a negative acceleration or
composed of it, it is likely engaging of having to accelerate in a certain
direction in which the direction is heading towards the opposite of the
direction that is stated and that is likely to be a positive direction.
Answer:
the speed of the car moving after accelerating for 56 m is 20 m/s
Explanation:
The computation is shown below:
As we know that
Vf^2 = Vi^2 + 2ad
= ( 8m/s )^2 + 2 ( 3m/s2 ) ( 56m)
= 400 m2/s2
Vf = 20 m/s
Hence, the speed of the car moving after accelerating for 56 m is 20 m/s
<h2>Soccer player practices kicking the ball </h2>
The player has 15 meters per second ( m/s ) average velocity of the ball. In order to calculate, we know that the formula of calculating the velocity is velocity = displacement / time.
A player practices kicking the ball into the goal from halfway down the soccer field. Half displacement will be considered which is 45 meters and time interval is given which is 3 seconds. By putting values in the formula v = d / t ( 45 / 3 ) = 15, we get 15 m / s average velocity.
Answer:
This is their velocity on the top of the slope
Explanation:
The problem doesn't have final question however is an example of conservation of energy
And given from the problem to know the final velocity