Question

60.0-kg Beatrice on a motor scooter travels east at a speed of 15 m/s. She then reverses the direction and heads west at 10 m/s. What is the change in her momentum?

Question 1 options:

	1500 kg·m/s, west
	300 kg·m/s, east
	None of the above
	1500 kg·m/s, east
	300 kg·m/s, west

The forces acting on a plane are: lift L = 10.0 kN up, weight W = 10.0 kN down, thrustT = 2.5 kN east, and drag D = 2.0 kN west. What is the net force acting on the plane?

Question 2 options:

	0.5 kN, west
	Zero
	0.5 kN, east
	4.5 kN, east
	4.5 kN, west

Question 3 (4 points)

Saved

The graph shows v_x versus t for a body moving along a straight line. What is the total displacement of the body from 3 s to 11 s?

Question 3 options:

	100 m
	60 m
	120 m
	220 m
	80 m

Question 4 (2 points)

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5.0 moles of an ideal gas is compressed from 2.0 m³ to 1.0 m³ in an isothermal process. 30 J of energy is expanded during this process. What is the change in internal energy of the gas? Assume it is a diatomic gas.

Question 4 options:

	Zero
	- 30 J
	150 J
	-150 J
	30 J

Which of the following is an accurate statement?

Question 5 options:

	None of these.
	The magnitude of a vector can be less than the magnitude of one of its components.
	If the magnitude of vector A is less than the magnitude of vector B, then the x-component of A is less than the x-component of B.
	A vector cannot have zero magnitude if one of its components is not zero.
	The magnitude of a vector can be positive or negative.

Answer 1

5). Answer:-

A vector cannot have zero magnitude if one of its components is not zero.