Ali and Abdi go for a walk along an abandoned railroad truck , Ali puts one ear next to a rail, while Abdi 300m away taps in the
1 answer:
Answer:
Ali hear the sound in 0.046 seconds.
Explanation:
Given:
Distance between Ali and Abdi = 300m
Speed of sound in steel = 6500m/s
To Find :
How much sooner does Ali hear the sound = ?
Solution:
We can find the time in which the sound made by Abdi with a stone on the rail by using the speed formula
We know that
On substituting the given values,
Time = 0.046 seconds
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Answer:
7 m/s²
Explanation:
The formula for force is:
We want to find acceleration, so we must rearrange the formula for . Divide both sides of the equation by
Acceleration can be found by dividing the force by the mass.
The force is 42 newtons and the mass is 6 kilograms. A newton is equal to 1 kg * m/s², therefore the force is 42 kg* m/s².
Substitute the values into the formula.
Divide. When we divide, the kg in the numerator and denominator will cancel each other out.
The acceleration of the object is 7 meters per square seconds.
