Answer:
3)No, it's speed is constant.
Answer:
(a) 230.4 N
(b) 
Explanation:
Charge on a proton, q = 
Distance between the two protons, d = 1 femto meter = 
(a) By use of coulomb's law, the force between the two protons is given by

Where, k is the Coulombic constant = 9x 10^9 Nm^2/C^2
So, the force between them is given by

F = 230.4 N
(b) Acceleration is the ratio of force to the mass of proton.
the mass of proton, m = 1.67 x 10^-27 kg
So, acceleration


Answer:
Force = mass × acceleration.
Answer:
a) 12.8 N
b) 3.2 m/s²
Explanation:
I'm guessing the period is 0.5π s.
Period of a spring in simple harmonic motion is:
T = 2π √(m/k)
Given T = 0.5π and m = 2 kg:
0.5π = 2π √(2/k)
0.25 = √(2/k)
0.0625 = 2/k
k = 32
The spring constant is 32 N/m, and the maximum displacement is 0.4 m. The maximum force can be found with Hooke's law:
F = kx
F = (32 N/m) (0.4 m)
F = 12.8 N
The acceleration can be found with Newton's second law:
∑F = ma
kx = ma
(32 N/m) (0.2 m) = (2 kg) a
a = 3.2 m/s²