Answer:
<h3>The answer is 2 m/s²</h3>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula

where
f is the force
m is the mass
From the question
f = 20 N
m = 10 kg
We have

We have the final answer as
<h3>2 m/s²</h3>
Hope this helps you
ligma nuts is it the answer bro ;)
Mass number = no. of protons + no. of neutrons
so, it would be, 3+4 = 7
Answer:
Option A is the correct answer.
Explanation:
Here momentum is conserved.
That is 
Substituting values

Speed of block A after collision = 10 m/s
Option A is the correct answer.
A tachometer measures, for example it measures the MPH(Miles Per Hour) in a car. So like it measures your speed, so you could be going 100 MPH.