Answer:
b
Step-by-step explanation:
F=ma
m=F/a
m=100/25=4 kg
Mass of an object is 4 kg
Answer:
the acceleration is a=3ms^-2
Step-by-step explanation:
The distance is =69.3m
Apply the equation of motion
v2=u2+2as
the initial velocity is u=5ms−1
The final velocity is v=21ms−1
The acceleration is a=3ms−2
The distance is
s=v2−u22a
=212−522⋅3
=26×166
Answer:
Using the percentage difference formula you can find the percentage decrease.
SO its
100(new-old/new)
So we solve
10-6=4
4/10= 2/5
2/5*100=200/5
40
40 percent decrease