Work And Energy — Science STD 9 — Question

Newton's third law of motion can be used to explain:

A car accelerates uniformly from 18km/h to 36km/ h in 5s. The distance covered by the car will be:

Find out incorrect sentence:

The atomicities of ozone, sulphur, phosphorus and argon are respectively:

Nucleolus is a seat of:

1. Protein synthesis.
2. Ribosome synthesis.
3. Enzyme synthesis.
4. mRNA synthesis.

If a bus travelling at 20m/ s is subject to a steady deceleration of 5m/s², how long will it take to come rest:

The capacity of a body to do work is called ______:

The anion of an element has:

1. More electrons than the normal atom.
2. Less electrons than the normal atom.
3. More protons than the normal atom.
4. Same number of electrons as normal atom.

The linear momentum of a body of mass 2kg is 16kgms−1. What is its K. E?

Plants can be made disease-resistant by:

1. Heat treatment.
2. Hormone treatment.
3. Volchicine treatment.
4. Breeding with their wild relatives.