1. 20/20 - 16/20= 4/20
20x5=100 4x5=20
20%
Answer:
A The truck exerts greater force
Explanation:
During collision the truck exerts greater force due to its much larger mass coupled with the speed than the car exerts on it thereby damaging the car more
Answer:
They are the physical parts of a computer.
examples :monitor,keyboard,system unit and mouse.
Acceleration is given by:
where
v is the final velocity
u is the initial velocity
t is the time interval
Let's apply the formula to the different parts of the problem:
A)
Let's convert the quantities into SI units first:
t = 4.0 min = 240 s
So the acceleration is
B)
As before, let's convert the quantities into SI units first:
t = 94 s
So the acceleration is
C)
For this part we have to use a different formula:
where we have
v = 0 is the final velocity
u = 89.2 m/s is the initial velocity
a is the acceleration
d = 75 m is the distance covered
Solving for a, we find