# What is the velocity of a tennis ball?

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## What is the velocity of a tennis ball?

Between 122 feet per second( 83.2 mph ) at air temperature of 20C and 123 feet per second ( 83.8 mph ) at 0C. That’s assuming that the ball is hit perpendicular to the baseline, the net is 3.5 feet high, no spin on the tennis ball and no cross wind.

## What is the momentum of a tennis ball?

The magnitude of the instantaneous momentum of a 57-g tennis ball is 2.7 kgm/s.

## What is the formula for the velocity of a ball?

The velocity of the falling ball as a function of time is v = -9.8 (m/s2) t j and its position as a function of time is r = (4.9 m – ½ 9.8 (m/s2) t2) j.

## Why a moving tennis ball reduces in speed?

The friction force is usually backward, reducing the horizontal component of the ball’s forward velocity. Friction may act differently, though, if the ball has excessive topspin, or forward rotation of the ball.

## What is the momentum of a 6.0 kg ball?

Expert-Verified Answer Mass of the ball = 6 kg. Velocity = 2.2 m/s. ∴ p = 13.2 kgms⁻¹. Hence, the momentum of the ball is 13.2 kgms⁻¹.

## What is the formula for the momentum of the ball?

The momentum, p , of a body of mass m which is moving with a velocity v is p=m×v=mv p = m × v = m v .

## What is the formula for momentum in physics class 11?

The product of the units of mass and velocity is the unit of Momentum. To find the momentum, we can use the simple formula: P=mv, where P is the momentum.

## What is the SI unit of speed?

The SI unit of speed is the meter per second, abbreviated as m/s or ms-1.

## How to calculate speed?

Speed tells us how fast something or someone is travelling. You can find the average speed of an object if you know the distance travelled and the time it took. The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time.

## Is velocity same as speed?

Why is it incorrect to use the terms speed and velocity interchangeably? The reason is simple. Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement. Put another way, speed is a scalar value, while velocity is a vector.

## What is the final velocity of a ball thrown?

At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth (see figure 1).

## What is velocity grade 11?

Rate of change in displacement with respect to time is known as velocity. Velocity is a vector quantity that has both magnitude and direction. Velocity is a measure of how much time an object takes to reach a destination with direction. It is represented by V and is articulated as. V = s t.

## What is the velocity of metal ball?

The velocity v of metallic ball, when its acceleration is one half of a freely falling body isV=. 1×(σ−2ρ)r2g9η

## How fast is terminal velocity for a tennis ball?

Due to air resistance the tennis ball would reach a terminal velocity of about 100 km/hour. The ball would happily bounce unharmed. To put it in perspective, a good pro tennis player can serve at 150 km/hour. As for a person being harmed, how would you like to be hit in the head by a 100 km/hour tennis ball?