Answer:
Explanation:
Initial velocity of car, u = 50 km/h = 13.88 m/s
It stops, v = 0
Time, t = 10 s
We need to find the car's deceleration while slowing down. As the car is slowing down, it will have deceleration. It can be calculated as follows :
So, the deceleration of the car is .
Force is ALWAYS measured in Newtons (N)
Answer:
Explanation:
Density of an object is defined as the mass occupied per unit volume. “Density” is represented by “ρ”. Mathematically, where, “m" mass of an object and "v" is volume of an object.
Given that,
Step: 1
To find the mass of the copper:
Mass of the copper is 268.8 kg.
To balance the weight of the copper 268.8 kg = weight of the iron the volume required is
Step: 2
Answer:
KE = 1/2mv^2
KE = 1/2(1120)(40^2)
KE = 560(1600)
KE = 896000
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