PHYSICAL SCIENCE - 1ST MIDTERM TEST

Which statement about vector and scalar quantities is correct?

• A. Scalar quantities have direction.

• B. Only vector quantities have direction.

• C. Only scalar quantities have magnitude.

• D. Only vector quantities have magnitude.

Tags

NGSS.MS-PS3-1

A boy walks to West 50 m, to the South 50 m and then to the East 50 m. What is the displacement of the boy?

• A. 150 m to the east

• B. 200 m to the south

• C. 50 m to the South

•    D. 200 m to the west

Which of the following is NOT vector quantity?

• A. Velocity

• B. Displacement

• B. Time

• D. Force

Tags

NGSS.MS-PS3-1

Two forces F₁=20 N and F₂=5 N are acting on an object in opposite directions. What will the direction and magnitude of the resultant force be?

• in the direction of F₁, R=15 N

• in the direction of F₂, R=10 N

• in the direction of F₁, R=25 N

• in the direction of F₂, R=10N

Tags

NGSS.MS-PS2-2

Two forces F₁=20 N and F₂=5 N are acting on an object in same directions. What is the magnitude of resultant force?

• R=0

• R= -15N

• R=15N

• R=25N

Tags

NGSS.MS-PS2-2

An object is moving 400m distance in 20s. What is the speed of the car?

• A. 10 m/s

• B. 20 m/s

• C. 8000 m/s

• D. 0.05 m/s

Tags

NGSS.MS-PS3-1

Which of the following best describes the graph?

• it is distance-time graph.

• it is acceleration-time graph.

• it is the graph of constant speed-time graph.

• it is the graph of speeding up-time graph.

Tags

NGSS.MS-PS3-1

Which of the following/followings can increase speed of the system given in the figure?

 I.   The force F

II.  The mass m₁

III. The mass m₂
IV.  The coefficient of friction

• A.  I only

• B.   I and III

• C.   II and IV

• D.   II, III and IV

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Which of the following Newton's Laws of motion states that for every action there is an equal and opposite reaction?

• A. The law of conservation of energy

• B. The first law of motion

• C. The second law of motion

• D. The third law of motion

Tags

NGSS.MS-PS2-1

Two plane mirrors are placed so that the angle between mirrors is 90⁰. If an object is located in front of the mirrors, how many images will be formed in the mirrors?

• 1

• 2

• 3

• 4