Verified Questions & Answers
A woman applies an upward force to a basket filled with groceries.
Assume she is standing still.
What will happen to the basket if the force she applies is greater than
the force of gravity?
The basket will move sideways.
The basket will remain at the same height.
The basket will move up.
The basket will move down.
(Ans- The basket will move up.
A heavy truck and a light car travel at the same velocity side-by-side on
the highway. Both drivers apply the same braking force at the same
moment.
What will happen to the two vehicles?
The car will slow down more quickly than the truck.
The truck will slow down more quickly than the car.
,Both vehicles will slow down at the same rate.
The car will slow down but the truck will continue at the same speed.
(Ans-
The car will slow down more quickly than the truck.
Which force causes graphite from the tip of a pencil to transfer to the
paper?
Friction
Gravity
Air Resistance
Tension
(Ans- Friction
Which force keeps Jupiter in orbit around the Sun?
Air resistance
Gravity
Kinetic friction
Magnetism
(Ans- Gravity
,Which force causes a jet airplane to stop on a runway?
Friction
Gravity
Tension
Centripetal Force
(Ans- Friction
Which force causes meteors to burn up when they enter Earth's
atmosphere?
Friction
Gravity
Magnetism
Tension
(Ans- Friction
A slingshot is a Y-shaped stick with rubber bands between the prongs
for shooting stones and other small projectiles. A stone is shot by first
placing it in the slingshot holder, which is attached to the rubber bands.
The stone and holder are then pulled back, stretching the rubber bands.
When released, the stone is propelled forward and leaves the slingshot
at a high speed.
, Which type of energy transformation occurs from the point when the
rubber bands are fully stretched to when the stone leaves the
slingshot?
Chemical potential energy is converted into gravitational potential
energy.
Gravitational potential energy is converted into thermal energy.
Chemical potential energy is converted into gravitational potential
energy.
Elastic potential energy is converted into kinetic energy.
(Ans- Elastic potential energy is converted into kinetic energy.
Which type of energy conversion occurs at the moment fireworks
explode?
Elastic potential energy is converted into thermal energy.
Gravitational potential energy is converted into thermal energy.
Chemical potential energy is converted into kinetic energy.
Elastic potential energy is converted into gravitational potential energy..
(Ans- Chemical potential energy is converted into kinetic energy.