Have a query? Ask a Tutor!!

Access to best educators and exclusive paper discussions

Offsite Campus Turito Championship

Can’t find what you’re looking for?

Our tutors are from top schools around the world, and they are waiting for you 24/7, anytime, anywhere.

Homework- One to One Solutions
Understand concepts to solve better
Get your doubts solved instantly

Physics

Grade-7

Easy

Question

Direction : Calculate the missing term
m = 12 kg
v = ?
K.E. = 240 J

2 $\sqrt{10}$ m/s
20 m/s
40 m/s
$\frac{10}{\sqrt{2}}$ m/s

hint Hint:

2√10 m/s

The correct answer is: 2 $square root of 10$ m/s

KE = $1 half$ mv²
240 = $1 half$ × 12 × v²
^{$straight v squared space equals space 240 over 6$}
= 40
v = 2 $square root of 10$ m/s

Related Questions to study

Direction : Calculate the missing term
m = ?
v = 30 m/s
K.E. = 270 J

Direction : Calculate the missing term
m = ?
v = 30 m/s
K.E. = 270 J

Direction : Calculate the missing term
m = 100 gm
v = 2 m/s
K.E. = ?

Direction : Calculate the missing term
m = 100 gm
v = 2 m/s
K.E. = ?

Identify the odd one out.

Identify the odd one out.

parallel

The energy due to the motion of an object is ____.

The energy due to the motion of an object is ____.

A person starts running at a speed of 30 cm/s. His weight is 1200 N. Considering the g as 10 m/s, what is its kinetic energy?

A person starts running at a speed of 30 cm/s. His weight is 1200 N. Considering the g as 10 m/s, what is its kinetic energy?

A roller coaster is at the top of a 72 m hill and weighs 966 N. The coaster comes down at a speed of 10 m/s. What is its kinetic energy?

A roller coaster is at the top of a 72 m hill and weighs 966 N. The coaster comes down at a speed of 10 m/s. What is its kinetic energy?

parallel

There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell straps break, and it comes tumbling down at a speed of 15 m/s. What is its kinetic energy?

There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell straps break, and it comes tumbling down at a speed of 15 m/s. What is its kinetic energy?

A block is moving at a velocity of 40 m/s and has a mass of 1120 Kg. How much kinetic energy does the block have?

A block is moving at a velocity of 40 m/s and has a mass of 1120 Kg. How much kinetic energy does the block have?

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

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

parallel

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 = ?

parallel

Identify the odd one out.

Identify the odd one out.

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

parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.