Table of contents

0. Math Review31m
- Math Review
  31m
1. Intro to Physics Units1h 29m
2. 1D Motion / Kinematics3h 56m
3. Vectors2h 43m
4. 2D Kinematics1h 42m
5. Projectile Motion3h 6m
6. Intro to Forces (Dynamics)3h 22m
7. Friction, Inclines, Systems2h 44m
8. Centripetal Forces & Gravitation7h 26m
9. Work & Energy1h 59m
10. Conservation of Energy2h 54m
11. Momentum & Impulse3h 40m
12. Rotational Kinematics2h 59m
13. Rotational Inertia & Energy7h 4m
14. Torque & Rotational Dynamics2h 5m
15. Rotational Equilibrium3h 39m
16. Angular Momentum3h 6m
17. Periodic Motion2h 9m
18. Waves & Sound3h 40m
19. Fluid Mechanics4h 27m
20. Heat and Temperature3h 7m
21. Kinetic Theory of Ideal Gases1h 50m
22. The First Law of Thermodynamics1h 26m
23. The Second Law of Thermodynamics3h 11m
24. Electric Force & Field; Gauss' Law3h 42m
25. Electric Potential1h 51m
26. Capacitors & Dielectrics2h 2m
27. Resistors & DC Circuits3h 8m
28. Magnetic Fields and Forces2h 23m
29. Sources of Magnetic Field2h 30m
30. Induction and Inductance3h 38m
31. Alternating Current2h 37m
32. Electromagnetic Waves2h 14m
33. Geometric Optics2h 57m
34. Wave Optics1h 15m
35. Special Relativity2h 10m

6. Intro to Forces (Dynamics)

Vertical Forces & Acceleration

Physics

6. Intro to Forces (Dynamics)

Vertical Forces & Acceleration

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Multiple Choice

The Mars Rover Perseverance weighed about 10,000 N while on Earth. After it reached the surface of Mars, it weighed about 3790 N. What is the gravitational acceleration on Mars?

$g_{Mars}=0.039m/s^2$

$g_{Mars}=0.27m/s^2$

$g_{Mars}=3.7m/s^2$

$g_{Mars}=26m/s^2$

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Verified step by step guidance

Start by recalling the formula for weight, which is the force due to gravity: W = m * g, where W is the weight, m is the mass, and g is the gravitational acceleration.

To find the mass of the Mars Rover, use its weight on Earth. The weight on Earth is given as 10,000 N, and the gravitational acceleration on Earth is approximately 9.8 m/s². Rearrange the formula to solve for mass: m = W / g.

Calculate the mass of the Mars Rover using the weight on Earth: m = 10,000 N / 9.8 m/s².

Now, use the mass of the Mars Rover to find the gravitational acceleration on Mars. The weight on Mars is given as 3790 N. Use the formula W = m * g, rearranged to solve for g: g = W / m.

Substitute the weight on Mars and the mass of the Mars Rover into the formula to find the gravitational acceleration on Mars: g = 3790 N / (mass calculated from step 3).