Kinematics 2

Front

What is Kinematics?

Back

Kinematics is the branch of mechanics that describes the motion of objects without considering the forces that cause the motion.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time, measured in m/s².

Front

What is the formula for final velocity when starting from rest?

Back

Final velocity (v) = acceleration (a) × time (t).

Front

Calculate the final velocity of an object that accelerates at 5 m/s² for 6 seconds from rest.

Back

Final velocity = 5 m/s² × 6 s = 30 m/s.

Front

What is the formula for final velocity with initial velocity?

Back

Final velocity (v) = initial velocity (u) + (acceleration (a) × time (t)).

Front

Calculate the final velocity of a crow running at 7 m/s with an acceleration of 3 m/s² over 6 meters.

Back

Final velocity = 7 m/s (initial) + (3 m/s² × time). Time can be calculated using distance = initial velocity × time + 0.5 × acceleration × time².

Front

What is the formula for distance traveled under constant acceleration?

Back

Distance (s) = initial velocity (u) × time (t) + 0.5 × acceleration (a) × time².

Front

Calculate the distance traveled by a plane moving at 45 m/s and stopping over 12 seconds.

Back

Distance = 45 m/s × 12 s + 0.5 × (-3.75 m/s²) × (12 s)² = 270 m.

Front

What is the significance of the initial velocity in kinematics problems?

Back

Initial velocity is the velocity of an object before it starts accelerating and is crucial for calculating final velocity and distance.

Front

What is uniform acceleration?

Back

Uniform acceleration occurs when an object's velocity changes at a constant rate.