Driving down the road, you hit the brakes suddenly. As a result, your body moves toward the front of the car. Explain, using Newton’s laws.
Expert Solution & Answer
To determine
The reason due to which the body of a person moves toward the front of the car when the brakes apply suddenly.
Answer to Problem 1CQ
The body of a person moves toward the front of the car when the brakes apply suddenly is due to the inertia of motion.
Explanation of Solution
Inertia is the property of any object to resist the change its state of motion or state.
The Newton’s first law of motion states that an object remains in its state of rest or motion until or unless a external force applied on it. This is also known as the law of inertia.
When the brakes of the car apply suddenly then the body of person wants to remain in the state of motion due to the inertia. Thus the person moves toward the front of the car.
Conclusion:
Therefore, the body of a person moves toward the front of the car when the brakes apply suddenly is due to the inertia of motion.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
dn
A material has a dispersion coefficient of
dλ
= -17.7 × 10-5 nm-¹, with no = 1.500 when 20 = 543.0 nm.
A beam incident on the material contains wavelengths between ₁ = 425.0 nm and ₂ = 649.0 nm, and the beam's angle of
incidence i is 45.45°.
Use 1.000 for the index of refraction of air.
Letting denote the refraction angle, what is the absolute
value of the angular separation A0 of the refracted beams
produced by this material?
A0 =
Fapp
Fishing line
app
A constant horizontal force F of magnitude 12.0 N is applied to a uniform solid cylinder, which is initially
at rest, by a fishing line wrapped around the cylinder. The mass of the cylinder is 10.0 kg, its radius is 10.0
cm.
a) Compute the torque Tapp on the cylinder from the applied force. (1 point)
b) Compute the moment of inertia of the cylinder. (1 point)
c) Compute the angular acceleration of the cylinder. (1 point)
d) What is the rotational displacement 0 of the cylinder after t=5.00 s? (1 point)
e) How many meters x of fishing line come off the cylinder in this t=5.00 s? (1 point)
f) What is the kinetic energy of the cylinder after t=5.00 s? (1 point)
Ꮎ
X
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 150-kg laser sensor, that
measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the
horizontal direction and have a constant horizontal acceleration of magnitude ax = 2.84
air resistance We want to find the tension in the cable towing the sensor.
a) Draw the free body diagram of the forces acting on the sensor. (1 point)
m
We will ignore
b) Assume that the x direction is horizontal and the y direction vertical as in the drawing. Write the
projection of the tension force T on the x-y coordinates using the unknown angle 0. (1 points)
c) Apply the Newton second law to the x and y axis separately. (1 points)
d) From the two obtained equations compute the value of the angle 0 and the magnitude of the
tension force in the cable. (2 points)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.