SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Write the units which are used to measure long distances.

Convert 100°C into Kelvin.

A train travels from A to station B with a velocity of 100 km/h and returns from station B to station A with a velocity of 80 km/h. Its average velocity during the whole journey is ______ and its average speed is ______.

A car accelerates at 1.5m/s² on a straight road. How much is the increase in velocity in 4s?

Speed of the body in a particular direction can be called ______.

The equation v = u + at gives information as ______.

What is the slope of the body when it moves with uniform velocity?

When a body moves uniformly along the circle then ______.

A body moves with an initial velocity of 5ms^-1 and accelerates at 2ms ^-2. Its velocity after 10s is ______.

The area under the velocity-time graph represents ______.

If the final velocity is less than the initial velocity the acceleration is ______.

If final velocity is equal to initial velocity the value of acceleration is ______.

At the highest point, when a body is thrown vertically upwards, the velocity is ______.

A body moves in a circular pattern the ______ of velocity does not change but changes.

If the velocity of the body decreases with time the acceleration is negative and the motion is called decelerated motion.

The initial velocity of a freely falling object is zero as it is released from rest.

Assertion: A body can have acceleration even if its velocity is zero at a given instant of time.
Reason: A body is momentarily at rest when it reverses its direction of motion.

Assertion: An object can have constant speed but the variable velocity
Reason: Speed is a scalar but velocity is a vector.

Give the formula for each.

1. elation between initial, final velocity, acceleration, and displacement in a uniformly accelerated straight-line motion.
2. Relation between initial, final velocity, acceleration & time in a uniformly accelerated straight-line motion.
3. Relation between initial velocity, acceleration, displacement, and time.

Absolute Pressure is zero-referenced against a ______.