Question

1) An object of mass 2 kg is sliding with a constant velocity of 4 m/s on a
friction less horizontal table. The force required to keep the object moving
with the same velocity is:

32N
Zero
5N
8N​

Answer 1

• Mass=2kg
• Velocity=4m/s

Hence Acceleration=0

According to Newton second law

$\boxed{\sf Force=Mass\times Acceleration}$

$\\ \sf\longmapsto Force=2\times 0$

$\\ \sf\longmapsto Force=0N$