(Answered) A driver in a moving car applies the brakes the car slows

Academics

A driver in a moving car applies the brakes. The car slows to a final speed of 2.95 m/s over a distance of 40.0 m and a time interval of 7.05 s. The acceleration while braking is approximately constant.

(a) What is the car's original speed before braking? m/s

(b) What is its acceleration during this time? (The car's initial velocity is in the positive direction. Indicate the direction with the sign of your answer.) m/s2

View complete question

Physics, Academics

Category:- Physics
Reference No.:- M92099082
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Physics

Question a pendulum has a period of 177 s on earthpart a

Question: A pendulum has a period of 1.77 s on Earth. Part A: What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appr ...

Question tectonic plates are large segments of the earths

Question: Tectonic plates are large segments of the earths crust that move slowly. suppose that one such plates has an average speed of v=2.1 cm/ year. a) What distace d, in meters, does the plate move 1.4 seconds at thi ...

A high-energy muon was produced in the upper atmosphere 80

A high-energy muon was produced in the upper atmosphere 80 km above the sea level. 380 μs later, a detector at the sea level detected it. a. How long was the journey according to this muon? b. What was the proper time fo ...

A puck is moving on an air hockey table relative to an x y

A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +7.8 m/s and ax = +5.3 m/s2. The y components of ...

An unfortunate astronaut loses his grip during a spacewalk

An unfortunate astronaut loses his grip during a spacewalk and finds himself floating away from the space station, carrying only a rope and a bag of tools. First he tries to throw a rope to his fellow astronaut, but the ...

Question red light of wavelength 633 nm from a helium-neon

Question: Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.400 mm wide. The diffraction pattern is observed on a screen 3.45 m away. Define the width of a bright fringe as the distance betw ...

Question a simple pendulum oscillates with frequency fa

Question: A simple pendulum oscillates with frequency f. a) what is its frequency if the entire pendulum accelerated 0.43 g upward? b) what is its frequency if the entire pendulum accelerates 0.43 g downwards? The respon ...

Question a roller coaster car is going over the top of a

Question: A roller coaster car is going over the top of a 12-m-radius circular rise. At the top of the hill, the passengers "feel light," with an apparent weight only 60% of their true weight. How fast is the coaster mov ...

Question the power rating on a light bulb indicates how

Question: The power rating on a light bulb indicates how much power it would dissipate when it is hooked up to the standard household voltage of 120 V (this rating does not mean that the light bulb always dissipates the ...

Question at what speed does a ball hit the ground if you

Question: At what speed does a ball hit the ground if you toss a 120 g ball straight up to just touch the 12-m-high roof of the gymnasium if you release the ball 1.5 m above the ground? Solve this problem using energy. T ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Physics Expert