Tiwari Academy Discussion

Asked: October 27, 2020In: Class 9

A hockey ball of mass 200 g travelling at 10 m s–1 is struck bya hockey stick so as to return it along its original path with a velocity at 5 m s–1. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick.

NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-129 Questions No-13

Krisha Prasad

Asked: October 27, 2020In: Class 9

A bullet of mass 10 g travelling horizontally with a velocity of 150 m s–1 strikes a stationary wooden block and comes to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block. Also calculate the magnitude

NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-129 Questions No-14

Krisha Prasad

Asked: October 27, 2020In: Class 9

An object of mass 1 kg travelling in a straight line with a velocity of 10 m s–1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.

NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-129 Questions No-15

Krisha Prasad

Asked: October 27, 2020In: Class 9

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s–1 to 8 m s–1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.

NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-129 Questions No-16

Krisha Prasad

Asked: October 27, 2020In: Class 9

How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 m s–2.

NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-129 Questions No-18

Prisha Garg

Asked: October 22, 2020In: Class 9

How would you confirm that a colourless liquid given to you is pure water?

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No- 6

Prisha Garg

Asked: October 22, 2020In: Class 9

Explain the following giving examples. (a) saturated solution (b) pure substance (c) colloid (d) suspension.

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No- 4

Akarsh Bhattacharya

Asked: October 22, 2020In: Class 10

Compare the above system with the probable systems in hilly / mountainous areas or plains or plateau regions.

NCERT Solution for Class 10 Science Chapter 16 Sustainable Management of Natural Resources NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-278 Questions No-2

Prisha Garg

Asked: October 22, 2020In: Class 9

Classify each of the following as a homogeneous or heterogeneous mixture. soda water, wood, air, soil, vinegar, filtered tea.

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No-5

Samika Sharma

Asked: October 22, 2020In: Class 10

What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?

NCERT Solution for Class 10 Science Chapter 14 Sources of Energy NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-255 Questions No-10

A hockey ball of mass 200 g travelling at 10 m s–1 is struck bya hockey stick so as to return it along its original path with a velocity at 5 m s–1. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick.

A bullet of mass 10 g travelling horizontally with a velocity of 150 m s–1 strikes a stationary wooden block and comes to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block. Also calculate the magnitude

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s–1 to 8 m s–1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.

How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 m s–2.

How would you confirm that a colourless liquid given to you is pure water?

Explain the following giving examples. (a) saturated solution (b) pure substance (c) colloid (d) suspension.

Compare the above system with the probable systems in hilly / mountainous areas or plains or plateau regions.

Classify each of the following as a homogeneous or heterogeneous mixture. soda water, wood, air, soil, vinegar, filtered tea.

What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?

Which is the best website providing NCERT Solutions?

NCERT Books

Where can I get NCERT books in PDF format?

NIOS

NCERT Solutions

Sign Up

Sign In

Forgot Password

Tiwari Academy Discussion Latest Questions