Question

please answer these questions.

Answer 1

These all questions can be solved by a single formula..

F=Ma  [F=dp/dt]

Where F = Applied force

M=mass

a=acceleration

1//

Mass =1000kg

Acceleration =5m/s²

Force =Ma =1000×5=5000N

2///

M=50kg

a=2m/s²

F=50×2=100N

3///

M=100kg

a=3m/s²

F=300N

4///

a=2m/s²

M=?

F=10N

F=Ma

⇒M=F/a

⇒M=10/2=5Kg

5///

To calculate weight , we need to calculate mass first.

F=1000N

a=5m/s²

M=F/a=1000/5

M=200Kg

Weight is the force applied by earth on the object.

W=Mg [g=9.8m/s²]

W=200×9.8

W=1960N

6///

M=F/a

M=50000/10

M=5000Kg

7///

F=Ma

⇒a=F/M

⇒a=50000/1000

⇒a=50m/s²

8///

a=F/M=1000/2000

a=0.5m/s²

9///

Mass=500kg

Force=100N

a=F/M=500/100

a=5m/s²