Questions: First Name Kendra Last Name - Lab 1-Measure the Gravity (Weight) of your toy- car. Mass (g) Mass (kg) Gravity (weight) / N 1.Measure by triple beam 80.08 0.08 kg 0.08 kg(9.8 m / s) 2. If move your toy-car to the Moon, Its mass will be the same (the same/bigger/smaller). And its Weight (Gravity) will be smaller (the same/bigger/smaller). Why? Lab 2-Explore the characteristics of Friction Force 1. Make your car to move at different surface with constant velocity. (The friction force equals the spring force) 1. Conclusion: the different surface add different friction 2. Add different weight (More weight causes bigger normal force). Move the car on the lab table with constant "V" and record the friction force. 2. Conclusion 3. Compare the Sliding Friction and the Rolling Friction. 3. The Rolling friction is than the sliding friction.

Solution Steps

First, we need to calculate the gravity (weight) of the toy car using the given mass and the gravitational constant.

Given:

• Mass of the toy car: \(0.08 \, \text{kg}\)
• Gravitational acceleration: \(9.8 \, \text{m/s}^2\)

The formula for weight (\(G\)) is: \[ G = mg \]

Substituting the values: \[ G = 0.08 \, \text{kg} \times 9.8 \, \text{m/s}^2 = 0.784 \, \text{N} \]

\(\boxed{0.784 \, \text{N}}\)

Next, we address the question about the mass and weight of the toy car if it were moved to the Moon.

• The mass of the toy car will remain the same because mass is an intrinsic property and does not change with location.
• The weight (gravity) will be smaller on the Moon because the gravitational force on the Moon is weaker than on Earth.

In Lab 2, the experiment involves moving the car on different surfaces with constant velocity to observe the friction force.

Conclusion: Different surfaces add different friction forces.

The experiment involves adding different weights to the car and moving it on the lab table with constant velocity to record the friction force.

Conclusion: More weight causes a bigger normal force, which in turn increases the friction force.

The experiment involves comparing the sliding friction (no wheels) and rolling friction (with wheels) of the toy car.

Conclusion: The rolling friction is less than the sliding friction.

\(\boxed{\text{Rolling friction is less than sliding friction}}\)

Final Answer