1. The apparent shift in the position of a star caused by Earth's motion is called A. Revolution B. Stellar Parallax C. An Epicycle D. Retrograde Motion 2. Which form of motion always follows a curved path and requires an initial launch force that is greater than the force of gravity? A. Centripetal Motion B. Free Fall Motion C. Projectile Motion D. None of the Above 3. In the absence of friction, what will happen if you kick a soccer ball in the field? A. It will continue moving at constant speed along the path where it was launched. B. It will stop moving after some time since the force from the kick is no longer present. C. It will move at a constant speed then abruptly it will stop. D. It will move slowly then fast. 4. A person stands 4.50 m from a plane mirror. How far behind the mirror will the image be located? A. 4.50 m B. 9.00 m C. 2.25 m D. 5.67 m 5. According to the law of refraction, light passing from air to glass will cause the light to A. bend away from the normal line. B. bend toward the normal line. C. completely reflect off the glass and back into the air. D. maintain its original course through the glass.
Answer (1)
The apparent shift in the position of a star caused by Earth's motion is called B. Stellar Parallax .
Stellar parallax is the observed apparent shift in the position of a nearby star against the background of more distant stars as Earth orbits around the Sun. This effect provides one of the basic methods for measuring stellar distances.
Which form of motion always follows a curved path and requires an initial launch force that is greater than the force of gravity? C. Projectile Motion .
Projectile motion refers to the curved path that an object follows when it is thrown or propelled near the surface of the Earth. The object is subject to gravity's downward force, but if an initial force is applied greater than just the force opposing gravity, the object will follow a parabolic trajectory.
In the absence of friction, what will happen if you kick a soccer ball in the field? A. It will continue moving at constant speed along the path where it was launched .
According to Newton’s First Law of Motion, also known as the law of inertia, an object in motion will stay in motion at a constant speed along a straight path unless acted upon by a net external force. Since friction is absent, there would be no force capable of stopping the ball.
A person stands 4.50 m from a plane mirror. How far behind the mirror will the image be located? A. 4.50 m .
In plane mirrors, the image distance behind the mirror is equal to the object distance in front of the mirror. Therefore, the image appears to be 4.50 m behind the mirror.
According to the law of refraction, light passing from air to glass will cause the light to B. bend toward the normal line .
When light passes from a less dense medium like air into a denser medium like glass, it slows down and bends toward the normal line. This change in speed and direction is what refraction entails.
