Science Formulas Quiz

What is the formula to calculate work done when a force is applied to move an object through a distance? choose all

• W = F * D

• W = F /D

• ( W = F + d )

• Work equals force times distance

Answer explanation

The formula to calculate work done when a force is applied to move an object through a distance is W = F x d, where W represents work, F is the force applied, and d is the distance moved.

If a car accelerates from rest to 60 m/s in 3 seconds, what is its acceleration?

The acceleration can be calculated using the formula: acceleration = (final velocity - initial velocity) / time.

• 10 m/s\(^2\)

• 20 m/s\(^2\)

• 30 m/s\(^2\)

• 40 m/s\(^2\)

Answer explanation

The acceleration can be calculated using the formula: acceleration = (final velocity - initial velocity) / time. Substituting the values, we get acceleration = (60 m/s - 0 m/s) / 3 s = 20 m/s^2.

Convert 68°F to Celsius.

To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then multiply by 5/9.

• 15°C

• 20°C

• 25°C

• 30°C

Answer explanation

To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then multiply by 5/9. (68°F - 32) * 5/9 = 20°C. Therefore, 68°F is equal to 20°C.

What is the force exerted by a 10 kg mass accelerating at 5 m/s^2?

The force exerted by a mass accelerating at 5 m/s^2 is calculated using the formula F = m * a

• 15 N

• 20 N

• 50 N

• 60 N

Answer explanation

The force exerted by a mass accelerating at 5 m/s^2 is calculated using the formula F = m * a. Substituting m = 10 kg and a = 5 m/s^2, we get F = 10 kg * 5 m/s^2 = 50 N. Therefore, the correct answer is 50 N.

Using Ohm's Law, calculate the current (I) through a resistor with a resistance (R) of 5 ohms and a voltage (V) of 10 volts.

Using Ohm's Law (I = V / R), the current (I) = 10 V / 5 ohms =

• 0.5 A

• 1 A

• 2 A

• 5 A

Answer explanation

Using Ohm's Law (I = V / R), the current (I) = 10 V / 5 ohms = 2 A. Therefore, the correct answer is 2 A.

What is the work done when a force of 20 N is applied to move an object 5 meters?

Work done = Force x Distance== measured in Joules

• 4 J

• 10 J

• 100 J

• 25 J

Answer explanation

Work done = Force x Distance = 20 N x 5 m = 100 J. Therefore, the work done when a force of 20 N is applied to move an object 5 meters is 100 J.

A motorcycle increases its velocity from 10 m/s to 50 m/s in 5 seconds. What is its average acceleration?

Average acceleration is change in velocity over time. (50 m/s - 10 m/s) / 5 s

• 4 m/s\(^2\)

• 6 m/s\(^2\)

• 8 m/s\(^2\)

• 10 m/s\(^2\)

Answer explanation

Average acceleration is change in velocity over time. (50 m/s - 10 m/s) / 5 s = 8 m/s^2. Therefore, the correct answer is 8 m/s^2.

Convert 212°F to Celsius.

To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then multiply by 5/9.

• 50°C

• 75°C

• 100°C

• 125°C

Answer explanation

To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then multiply by 5/9. (212°F - 32) * 5/9 = 100°C.

Calculate the force needed to accelerate a 2 kg mass at 3 m/s^2.

To calculate force, use the formula F = m * a

• 5 N

• 6 N

• 8 N

• 10 N

Answer explanation

To calculate force, use the formula F = m * a. Substituting m = 2 kg and a = 3 m/s^2, we get F = 2 kg * 3 m/s^2 = 6 N. Therefore, the correct answer is 6 N.

Using Ohm's Law, find the resistance (R) if the voltage (V) is 20 volts and the current (I) is 4 amperes.

Using Ohm's Law (R = V / I), with V = 20 volts and I = 4 amperes,

• 2 ohms

• 4 ohms

• 5 ohms

• 8 ohms

Answer explanation

Using Ohm's Law (R = V / I), with V = 20 volts and I = 4 amperes, R = 20 / 4 = 5 ohms. Therefore, the correct answer is 5 ohms.