Question 4181:

• WAEC 2019

Which of the following quantities is a vector?

A. Volume
B. Momentum
C. Energy
D. Speed

Question 4182:

• WAEC 2019

In an elastic collision, momentum is conserved as well as well as

A. Velocity
B. Kinetic energy
C. Potential energy
D. Speed

Question 4183:

• WAEC 2019

The induced current in a coil always flows in a direction so as to oppose the change that causes it. This statement is known as

A. Coulomb's law
B. Lenz's law
C. Faraday's law
D. Ampere's law

Question 4184:

• WAEC 2019

Which of the following instruments can be used to compare the magnitudes of charges on two given bodies?

A. Electrophorus
B. Ebonite rod
C. Gold-leaf electroscope
D. Proof planes

Question 4185:

• WAEC 2019

A body of mass 2 kg is released from a point 100 m above the ground. Calculate its kinetic energy 80m from the point of release.

A. 1600 J
B. 900 J
C. 600 J
D. 200 J