The yo-yo speeds up when you rub it
Answer:
mass = 4kg
Explanation:
Kinetic Energy = 1/2 x m x v²
where m = mass and v = velocity
So,
KE = 50
1/2 × m × 5² = 50
1/2 × m × 25 = 50
m = (50 x 2)/25
m = 100/25
m = 4 kg
N stands for Newton
2- upload the graph..
Answer:
Here, force=20N and displacement=10m
Work=Force×Displacement=20N×10m=200Nm
