ACP Kinematics Review

Front

What is relative velocity?

Back

Relative velocity is the velocity of an object as observed from a particular reference frame. It is calculated by taking the velocity of the object and subtracting the velocity of the observer.

Front

Define projectile motion.

Back

Projectile motion is a form of motion experienced by an object or particle that is thrown near the earth's surface and moves along a curved path under the action of gravity only.

Front

What is the formula for acceleration?

Back

Acceleration (a) is defined as the change in velocity (Δv) over the change in time (Δt): a = Δv / Δt.

Front

How do you calculate the final velocity of an object given initial velocity, acceleration, and time?

Back

Final velocity (v_f) can be calculated using the formula: v_f = v_i + a * t, where v_i is the initial velocity, a is acceleration, and t is time.

Front

What is the effect of wind on the motion of an object?

Back

Wind can exert a force on an object, causing it to accelerate in the direction of the wind, affecting its overall velocity.

Front

Explain the concept of inertia.

Back

Inertia is the property of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

Define the term 'net force'.

Back

Net force is the vector sum of all the forces acting on an object. It determines the object's acceleration according to Newton's second law.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

Front

How does gravity affect projectile motion?

Back

Gravity acts as a constant downward force on a projectile, causing it to follow a parabolic trajectory and affecting its vertical motion.