Physics

Grade-7

Easy

Question

Direction : Calculate the missing term.
m = ?
v = 20 m/s
K.E. = 100 J

$\frac{1}{2}$ kg
$\frac{1}{4}$ kg
2 kg
4 kg

hint Hint:

1/2 kg

The correct answer is: $1 half space$ kg

$KE space equals space 1 half space mv squared 100 space equals space fraction numerator 1 over denominator 2 space end fraction space straight x space straight m space cross times space 20 squared straight m equals fraction numerator 200 over denominator 20 space cross times space 20 end fraction equals space 0.5 space kg$

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Direction : Calculate the missing term.m = ?v = 20 m/sK.E. = 100 J

kg kg2 kg4 kg

1/2 kg

The correct answer is: kg

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Direction : Calculate the missing term.
m = ?
v = 20 m/s
K.E. = 100 J

$\frac{1}{2}$ kg
$\frac{1}{4}$ kg
2 kg
4 kg

The correct answer is: $1 half space$ kg

Direction : Calculate the missing term.
m = 1500 g
v = 100 m/s
K.E. = ?

Direction : Calculate the missing term.
m = 1500 g
v = 100 m/s
K.E. = ?

Direction : Calculate the missing term.
m = 25 Kg
v = 10 m/s
K.E. = ?

Direction : Calculate the missing term.
m = 25 Kg
v = 10 m/s
K.E. = ?

Direction : Calculate the missing term.
m = 10 kg
K.E. = 250 J
v = ?

Direction : Calculate the missing term.
m = 10 kg
K.E. = 250 J
v = ?

What is wrong with the given formula?
$KE space equals space 2 mv squared$

What is wrong with the given formula?
$KE space equals space 2 mv squared$

Direction : Is this an example of kinetic energy?
A person ready to dive

Direction : Is this an example of kinetic energy?
A person ready to dive

Direction : Is this an example of kinetic energy?
Flying airplane

Direction : Is this an example of kinetic energy?
Flying airplane

Direction : Is this an example of kinetic energy?
Throwing a ball

Direction : Is this an example of kinetic energy?
Throwing a ball

Direction : Is this an example of kinetic energy?
Stretched rubber band

Direction : Is this an example of kinetic energy?
Stretched rubber band

Direction : Is this an example of kinetic energy?
Motion of a meteor

Direction : Is this an example of kinetic energy?
Motion of a meteor