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1. GENERAL PHYSICS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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1. GENERAL PHYSICS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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1. GENERAL PHYSICS QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
Speed= - ANSWER distance÷time
What is the shape of a distance-time graph when the object is at rest? - ANSWER a horizontal line
What is the shape of a distance-time graph when the object is moving with constant speed? - ANSWER a
slanted line
What is the shape of a distance-time graph when the object is moving with changing speed? - ANSWER a
curved line
What is the distance traveled for motion with constant acceleration in a speed-time graph? - ANSWER
the area under the graph
If a body accelerates its speed-time graph will have a... - ANSWER positive gradient
If a body decelerates its speed-time graph will have a... - ANSWER negative gradient
What is the difference between speed and velocity? - ANSWER Velocity is a vector while speed is scalar.
Velocity has a direction.
a = - ANSWER ∆v÷t
Speed (on a distance-time graph) = - ANSWER the gradient
Acceleration (on a speed-time graph) = - ANSWER the gradient
On a speed-time graph, a straight line with a positive gradient means... - ANSWER constant acceleration
, On a speed-time graph, a curved line with a positive gradient means... - ANSWER changing acceleration
Deceleration= - ANSWER negative acceleration
The mass of a body = - ANSWER the number of particles it has
Weight is a _____________ force - ANSWER gravitational
What is the difference between mass and weight? - ANSWER Weight is affected by gravitational field
strength
W(Weight) = - ANSWER m×g
How do you compare weights using balance? - ANSWER You put a weight on each side of the balance
then whichever way the balance leans is the heaviest.
What is 'inertia'? - ANSWER It is the idea that if a force is applied to an object, it will not immediately
reach a high speed because it requires time to accelerate, as shown by the formula F=ma.
Weight (definition) = - ANSWER A body's mass multiplied by the strength of the gravitational field around
it.
ρ = - ANSWER m×V
Describe an experiment to determine the density of a liquid and of a regularly shaped solid. - ANSWER
Find the mass by weighing the object on a scale and then use a measuring cylinder to find the volume.
Then divide the mass by the volume to get the density in (g/cm³)
Describe the determination of the density of an irregularly shaped solid by the method of displacement.
- ANSWER First, fill a Eureka can to the level of the spout, then lower the solid into the water. Pour the
water collected out of the spout into a measuring cylinder. That is the volume of the solid. Then, weigh
the mass and apply the density formula (ρ = m×V) to calculate the density.
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