Answer:
40.47m/s²
Explanation:
Acceleration is the change in velocity of a body with respect to time.
Acceleration = change in velocity/time
Given speed = 1020km/hr
Time = 1.7s
Converting 1020km/hr to m/s we have;
(1020×1000/3600)m/s
= 1,020,000/3,600
= 283.3m/s
Acceleration = 283.3/7
Acceleration = 40.47m/s²
Deceleration is therefore 40.47m/s²
Answer:
D
Explanation:
The standard international (SI) unit for spring constant is N/m, so N/km is the same thing but bigger.
The mass of the box would be 30!
