Uniformly Accelerated Motion

What is the formula to calculate final velocity in uniformly accelerated motion?

• v = u * a * t

• v = u + t

• v = u + at

• v = u + a

State the equation for acceleration in uniformly accelerated motion.

• a = v_f * v_i / t

• a = (v_f - v_i) * t

• a = (v_f - v_i) / t

• a = (v_f + v_i) / t

Explain the concept of uniformly accelerated motion.

• Uniformly accelerated motion involves circular motion

• In uniformly accelerated motion, an object moves in a straight line with constant acceleration, resulting in its velocity changing by the same amount in equal time intervals.

• Objects in uniformly accelerated motion always move at a constant speed

• In uniformly accelerated motion, the acceleration changes continuously

How is distance related to time in uniformly accelerated motion?

• Distance is inversely proportional to time

• Distance is proportional to the square root of time

• Distance is constant regardless of time

• Distance is proportional to (time)^2

Define initial velocity in the context of uniformly accelerated motion.

• Initial velocity is the velocity of an object at the beginning of its motion when acceleration starts to act on it.

• Initial velocity is the velocity of an object when it reaches its maximum speed.

• Initial velocity is the velocity of an object at the end of its motion.

• Initial velocity is the velocity of an object at rest.

What is the SI unit of acceleration?

• m/s

• m/s^2

• cm/s^2

• km/h^2

Describe the motion of an object under the influence of gravity.

• The object will float in the air due to gravity.

• The object will move sideways due to gravity.

• The object will fall towards the center of the Earth due to gravity.

• The object will move upwards against gravity.

How does acceleration affect the velocity of an object in uniformly accelerated motion?

• Acceleration decreases the velocity of an object.

• Acceleration keeps the velocity constant.

• Acceleration changes the rate at which the velocity of an object changes.

• Acceleration has no effect on velocity.

What is the difference between speed and velocity in uniformly accelerated motion?

• Speed measures distance traveled, while velocity measures time taken.

• In uniformly accelerated motion, the difference between speed and velocity is that speed is a scalar quantity measuring how fast an object is moving, while velocity is a vector quantity including both speed and direction.

• Speed and velocity are the same in uniformly accelerated motion.

• Speed is a vector quantity, while velocity is a scalar quantity.

Discuss the significance of acceleration due to gravity in free fall.

• Acceleration due to gravity has no impact on free fall

• Acceleration due to gravity is significant in free fall as it determines the rate at which objects fall towards the Earth.

• Gravity only affects objects on the ground, not in free fall

• Objects fall faster in free fall due to air resistance