Physics Multiple Choice Questions
When you drop a ball, it accelerates downward at 9.8 m/s². If instead you
throw it horizontally, then its acceleration immediately after leaving your hand,
assuming no air resistance, is
a. 9.8 m/s²
b. more than 9.8 m/s²
c. less than 9.8 m/s²
d. Cannot say, unless the speed of throw is given - correct answer ✔A
How many vectors shown in the figure (refer ch. 3 test pt. 1, #2) have nonzero
horizontal components?
a. 2
b. 3
c. 4
d. 5 - correct answer ✔C
Which vectors shown in the figure (refer ch. 3 test pt. 1, #3) have vertical
components that are equal?
a. d₁ and d₂
b. d₁ and d₃
c. d₂ and d₅
d. d₄ and d₅ - correct answer ✔B
Which of the curves on the graph (refer ch. 3 test pt. 1, #4) best represents
the vertical component vy of the velocity versus time t for a projectile fired at
an angle 45° above the horizontal?
a. OC
,b. DE
c. AB
d. AE
e. AF - correct answer ✔D
Which of the curves on the graph best represents the horizontal component vx
of the velocity versus time t for a projectile fired at an angle 45° above the
horizontal?
a. OC
b. DE
c. AB
d. AE
e. AF - correct answer ✔C
A 2-kg mass and a 4-kg mass on a horizontal frictionless surface are
connected by string A having negligible mass. The 2-kg mass is on the right,
and is pulled horizontally to the right by a second string B (also having
negligible mass), resulting in a constant acceleration of 12 m/s².
What is the magnitude of the tension in string B on the 2-kg mass?
a. 72 N
b. 48 N
c. 24 N
d. 6 N
e. 3 N - correct answer ✔A
A 2-kg mass and a 4-kg mass on a horizontal frictionless surface are
connected by string A having negligible mass. The 2-kg mass is on the right,
, and is pulled horizontally to the right by a second string B (also having
negligible mass), resulting in a constant acceleration of 12 m/s².
What is the magnitude of the tension in string A on the 4-kg mass?
a. 72 N
b. 48 N
c. 24 N
d. 6 N
e. 3 N - correct answer ✔B
A 2-kg mass and a 4-kg mass on a horizontal frictionless surface are
connected by string A having negligible mass. The 2-kg mass is on the right,
and is pulled horizontally to the right by a second string B (also having
negligible mass), resulting in a constant acceleration of 12 m/s².
What is the magnitude of the net force on the 2-kg mass?
a. 72 N
b. 48 N
c. 24 N
d. 6 N
e. 3 N - correct answer ✔C
The coefficient of kinetic friction:
a. is in the direction of the frictional force
b. is in the direction of the normal force
c. is the ratio of force to area
d. can have units of Newtons
When you drop a ball, it accelerates downward at 9.8 m/s². If instead you
throw it horizontally, then its acceleration immediately after leaving your hand,
assuming no air resistance, is
a. 9.8 m/s²
b. more than 9.8 m/s²
c. less than 9.8 m/s²
d. Cannot say, unless the speed of throw is given - correct answer ✔A
How many vectors shown in the figure (refer ch. 3 test pt. 1, #2) have nonzero
horizontal components?
a. 2
b. 3
c. 4
d. 5 - correct answer ✔C
Which vectors shown in the figure (refer ch. 3 test pt. 1, #3) have vertical
components that are equal?
a. d₁ and d₂
b. d₁ and d₃
c. d₂ and d₅
d. d₄ and d₅ - correct answer ✔B
Which of the curves on the graph (refer ch. 3 test pt. 1, #4) best represents
the vertical component vy of the velocity versus time t for a projectile fired at
an angle 45° above the horizontal?
a. OC
,b. DE
c. AB
d. AE
e. AF - correct answer ✔D
Which of the curves on the graph best represents the horizontal component vx
of the velocity versus time t for a projectile fired at an angle 45° above the
horizontal?
a. OC
b. DE
c. AB
d. AE
e. AF - correct answer ✔C
A 2-kg mass and a 4-kg mass on a horizontal frictionless surface are
connected by string A having negligible mass. The 2-kg mass is on the right,
and is pulled horizontally to the right by a second string B (also having
negligible mass), resulting in a constant acceleration of 12 m/s².
What is the magnitude of the tension in string B on the 2-kg mass?
a. 72 N
b. 48 N
c. 24 N
d. 6 N
e. 3 N - correct answer ✔A
A 2-kg mass and a 4-kg mass on a horizontal frictionless surface are
connected by string A having negligible mass. The 2-kg mass is on the right,
, and is pulled horizontally to the right by a second string B (also having
negligible mass), resulting in a constant acceleration of 12 m/s².
What is the magnitude of the tension in string A on the 4-kg mass?
a. 72 N
b. 48 N
c. 24 N
d. 6 N
e. 3 N - correct answer ✔B
A 2-kg mass and a 4-kg mass on a horizontal frictionless surface are
connected by string A having negligible mass. The 2-kg mass is on the right,
and is pulled horizontally to the right by a second string B (also having
negligible mass), resulting in a constant acceleration of 12 m/s².
What is the magnitude of the net force on the 2-kg mass?
a. 72 N
b. 48 N
c. 24 N
d. 6 N
e. 3 N - correct answer ✔C
The coefficient of kinetic friction:
a. is in the direction of the frictional force
b. is in the direction of the normal force
c. is the ratio of force to area
d. can have units of Newtons
