ㄷㅂ물리학

When an object is in projectile motion, what is the shape of the path it follows?

In projectile motion, which of the following quantities remains constant throughout the motion?

Answer explanation

a) Horizontal velocity

What is the horizontal component of the velocity of a projectile at the highest point of its trajectory?

If two objects are launched with the same initial velocity but different launch angles, which one will have a longer time of flight?

• The one with a smaller launch angle

• The one with a larger launch angle

• Both will have the same time of flight

• It depends on other factors

What keeps an object moving in a circular path at constant speed?

• Inertia

• Centripetal force

• Tangential force

• Friction

Which of the following best describes the direction of the velocity of an object in uniform circular motion?

• Toward the center of the circle

• Tangent to the circle

• Opposite to the centripetal force

• Perpendicular to the radius and the force

In uniform circular motion, which quantity remains constant?

• Acceleration

• Velocity

• Speed

• Direction of motion

What are the two types of Circular motion?

A 2 kg object moves in a circle with a radius of 1.5 m at a constant speed. What is the direction of the net force acting on the object?

• Tangent to the path

• Opposite to the motion

• Toward the center

• Away from the center

Formula for centripetal acceleration