Friction and the applied force are not balanced. The 7 N push is countered by the frictional force of 3 N to push the box with a net force of 4 N.
Answer:
Explanation:
In space, rockets zoom around with no air to push against. ... When a rocket shoots fuel out one end, this propels the rocket forward — no air is required. NASA says this principle is easy to observe on Earth. If you stand on a skateboard and throw a bowling ball forward, that force will push you and the skateboard back.
Answer is: protons and neutrons in atomic nucleus.
Proton<span> is a </span>subatomic particle (p⁺ or p) <span>with a positive </span><span>electric charge.
</span>Neutron (n⁰ or n)<span> is a </span>subatomic particle <span>with no net </span>electric charge.
Protons and neutrons are nucleons.
The nuclear force is attractive force<span> between nucleons.</span>
Answer: 
Explanation:
From Newton's law of motion, Force is equal to rate of change of momentum.
The initial velocity of the ball, u = 4.1 m/s
mass of the ball, m = 0.07 kg
During contact, velocity = 0
Time of contact, t = 72 ms = 72 × 10⁻³ s

Thus, net force applied to the ball during this collision is 