Answer
3
Explanation:
x=
<em>t + 1/2 </em>
<em />
<span>7.8x102
x 1.95x10<span>3 this is the answer mate
</span></span>
Answer:
-13.7m/s
Explanation:
If the car has a mass of 1400kg with a speed of +13.7m/s -> hits [email protected] rest and bounces with an elastic collision:
fm = -fm
Therefore, the speed the car will possess will be at a negative state.
= -13.7m/s
Answer:
acceleration, a = 
distance, d = 80 m
Given:
Initial velocity of object, v = 20 m/s
Final velocity of object, v' = 60 m/s
Time interval, 
Solution:
(a) Acceleration is the rate at which velocity changes and constant acceleration is when the velocity changes by equal amount in equal intervals of time.
Thus
acceleration, a = 
a = 
(b) Now, the distance covered is given by:


Answer:
1400 units of momentum.
Explanation:
Using the formula p=mv. We can get the momentum using 70*20 =1400 units of momentum