B
HOPE IT HELPS LET ME KNOW IF U NEED EXPLANATION
Answer:
0.25 second
Explanation:
Given :
Velocity, v = 10 m/s
The height,
= 5 m
Therefore the time at which both the bodies meet is
So, time taken is 0.25 seconds
Answer:
Explanation:
Hooke's law is represented by thee formula
F = ke where F is force in N and K is the spring constant.
Initial length of the spring = 34cm = 0.34 m
mass of 7.00kg hung
weight = mg = 7 × 9.8 = 68.6 N
Final length of the spring = 44.5 cm = 0.445 m
extension = final length - initial length = 0.445 m - 0.34 m = 0.105 m
a) F = Ke
K = F / e = 68.6 N /0.105 m = 653.33 N/m = 0.653 kN/m
b) F = 150 N
k = 653.33 N/m
F = ke
150 N / 653.33 N/m = e
e = 0.23 m
new length = 0.34 + 0.23= 0.57 m = 57 cm
Answer:
40,000N of force
Explanation:
The formula for force is F=ma. If we plug in the values, F=(20,000kg)(2m/s^2).
