Question

Please answer this physics question asap!! i will give brainliest to best answer!!

Answer 1

Explanation:

Kinetic energy = ½mv²

=½×1990×28

=27860 J

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Answer 2

$\Large{\underline{\ubderline{\bf{Solution :}}}}$

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★ Given :

Mass of vehicle (m) = 1990 kg

Speed of vehicle (v) = 28 $\sf{ms^{-1}}$

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★ To Find :

We have to find the kinetic energy(K.E) of the vehicle.

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★ Solution :

We know the formula to find the kinetic energy of a object when mass and velocity of the object is given.

$\Large{\implies{\boxed{\boxed{\sf{K.E = \frac{1}{2} \: mv^2}}}}}$

________________[Put Values]

$\sf{→K.E = \frac{1}{\cancel{2}} \: \cancel{1990} \times (28)^2} \\ \\ \sf{→K.E = 995 \times (28)^2} \\ \\ \sf{→K.E = 995 \times 784} \\ \\ \sf{→K.E = 780080 \: J} \\ \\ \Large{\implies{\boxed{\boxed{\sf{K.E = 780080 \: J}}}}}$