Answer:
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Answer:
the force needed to give the truck the acceleration is 29,760 N.
Explanation:
Given;
mass of truck, m = 4800 kg
acceleration of the truck, a = 6.2 m/s²
The force needed to give the truck the acceleration is calculated as;
F = ma
F = 4800 x 6.2
F = 29,760 N
Therefore, the force needed to give the truck the acceleration is 29,760 N.
Answer:C
Explanation:
let the speed be v for both mass x and mass y
mass(x)=500kg
mass(y)=2000kg
Kinetic energy(mass(x))=(500 x v^2)/2
Kinetic energy(mass(x))=250v^2
Kinetic energy(mass(y))=(2000xv^2)/2
Kinetic energy(mass(y))=1000v^2
Ratio of kinetic energy y to x =1000v^2:250v^2
=1000v^2 / 250v^2
=4/1=4:1
