Физика пәнінен формулалар жинағы Механика

Distance is a scalar quantity that refers to how much ground an object has covered during its motion. What is the formula to calculate distance?

• Distance = Speed / Time

• Distance = Time / Speed

• Distance = Speed + Time

• Distance = Speed x Time

Displacement is a vector quantity that refers to the change in position of an object. How is displacement different from distance?

• Displacement is measured in kilometers, while distance is measured in meters.

• Displacement considers both magnitude and direction, while distance only considers total length.

• Displacement is always positive, while distance can be negative.

• Displacement is a scalar quantity, while distance is a vector quantity.

Speed is a scalar quantity that refers to how fast an object is moving. What is the formula to calculate speed?

• Speed = Distance * Time

• Speed = Time / Distance

• Speed = Distance - Time

• Speed = Distance / Time

Velocity is a vector quantity that refers to the rate at which an object changes its position. How is velocity different from speed?

• Velocity includes direction, while speed does not.

• Velocity is a scalar quantity, while speed is a vector quantity.

• Velocity is constant, while speed can change.

• Velocity is measured in kilometers per hour, while speed is measured in meters per second.

Acceleration is a vector quantity that refers to the rate at which an object changes its velocity. What is the formula to calculate acceleration?

• acceleration = (final velocity - initial velocity) / time

• acceleration = (final velocity + initial velocity) / time

• acceleration = (final velocity * initial velocity) / time

• acceleration = (final velocity - initial velocity) * time

What is the difference between positive acceleration and negative acceleration?

• Positive acceleration increases velocity, negative acceleration decreases velocity.

• Positive acceleration causes deceleration, negative acceleration causes acceleration.

• Positive acceleration decreases speed, negative acceleration increases speed.

• Positive acceleration decreases velocity, negative acceleration increases velocity.

What are the three equations of motion used in kinematics?

• v = u + 2as

• v = at + u

• s = ut + at^2

• v = u + at, s = ut + (1/2)at^2, v^2 = u^2 + 2as

If an object is in free fall near the surface of the Earth, what is the acceleration due to gravity?

• 5.67 m/s^2

• 10.24 m/s^2

• 9.81 m/s^2

• 7.89 m/s^2

What is the formula to calculate the final velocity of an object in free fall?

• v = g + t

• v = g / t

• v = √(2 * g * h)

• v = g * t

How does air resistance affect the motion of an object in free fall?

• Air resistance increases the speed of the object in free fall

• Air resistance has no effect on the motion of an object in free fall

• Air resistance slows down the object in free fall, limiting its acceleration and causing it to reach a terminal velocity.

• Air resistance causes the object in free fall to move in a straight line