Question

a) Two cars are set to race, one can only accelerate at a rate of 2m/s...

a) Two cars are set to race, one can only accelerate at a rate of 2m/s starting from rest, and the other can only travel at a set speed of 10 m/s. How fast does each car cover 400 m? Which car would cover a distance of 400 m faster?

b) If both cars from the previous question started from the same position, at what time would they have the same displacement? What is the displacement of the vehicles?

c) A truck covers 40 m in 8.5 seconds while smoothly slowing down at a constant rate ( acceleration is constant) to a final speed of 2.8 m/s. Solve for the truck's original speed and it's acceleration.

d) You are cruising at a speed of 60 mph (26.8 m/s} when a deer appears 100 m ahead of you. What is the maximum time you have to stop and what acceleration do you need to have to avoid hitting the deer?
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Two cars start from rest at the same location and at the same instant and race...
Two cars start from rest at the same location and at the same instant and race along a straight track. Car A accelerates at 6.6 f/s^2 to a speed of 90 mph and then runs at this constant speed. Car B accelerates at 4.4 f/s^2 to a speed of 96 mph and then runs a constant speed. (a) Which car will with a 3-mile race and by what distance? (b) What will be the maximum lead of A over B?...
1. Starting from rest, it took you 12 seconds to accelerate your car to 24 m/s...
1. Starting from rest, it took you 12 seconds to accelerate your car to 24 m/s at a constant acceleration. Find your acceleration. 2.A prototype car starts from rest and accelerates at a constant rate to 60 m/s in 5.1 seconds. How much distance did the car travel during the 5.1-second accelerated motion? 3. A speeding driver noticed a police car parked about 443 m in from of him on the side of the road and reduced his speed at...
In a quarter-mile drag race, two cars start simultaneously from rest, and each accelerates at a...
In a quarter-mile drag race, two cars start simultaneously from rest, and each accelerates at a constant rate until it either reaches its maximum speed or crosses the finish line. Car A has an acceleration of 10.6 m/s2 and a maximum speed of 104 m/s. Car B has an acceleration of 11.7 m/s2 and a maximum speed of 87.5 m/s. (a) Which car wins the race? (b) By how many seconds does this car win the race?
At t = 0, one toy car is set rolling on a straight track with initial...
At t = 0, one toy car is set rolling on a straight track with initial position 17.0 cm, initial velocity -2.7 cm/s, and constant acceleration 2.70 cm/s2. At the same moment, another toy car is set rolling on an adjacent track with initial position 9.5 cm, initial velocity 5.30 cm/s, and constant zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (Enter NA if the cars never have equal speeds.) s (b) What...
1. Motion of an object depends on its velocity only. True False 2. A car with...
1. Motion of an object depends on its velocity only. True False 2. A car with a mass of 2500 kg is traveling at a speed of 30 m/s due east. Choose the most appropriate answer to its momentum. a. 30 m/s due east b. 30 m/s c. 75,000 kgm/s d. 75,000 kgm/s due east 3. A car is traveling at 70 mph and then is involved in an accident with a head-on collision into a very solid wall. As...
can someome answer these please? A runner jogs one lap around the track that encircles a...
can someome answer these please? A runner jogs one lap around the track that encircles a football field (and, if it were me, would immediately collapse). If she ends where she began, and the distance is one-quarter mile, what is the displacement of the jogger? A rocket is fired from the launch pad, obtaining a speed of 650 m/s in 7.0 seconds. What is the average acceleration of the rocket? Round to the nearest integer. A coyote, closely related to...
İtem 3 Learning Goal: To set up and evaluate the equations of motion in a normal-tangential...
İtem 3 Learning Goal: To set up and evaluate the equations of motion in a normal-tangential coordinate system. A car of weight 11.5 kN is traveling around a curve of constant curvature ρ. Part A - Finding the net friction force The car is traveling at a speed of 24.5 m/s, which is increasing at a rate of 2.15 m/s^2 , and the curvature of the road is ρ= 190 m . What is the magnitude of the net frictional...
Suppose the two cars had rubber bumpers in the front and back – similar to the...
Suppose the two cars had rubber bumpers in the front and back – similar to the bumper cars children (of all ages!) ride at amusement parks. Also, suppose that the cars are sturdy enough that the metal they are made of does not bend during the collision. In this case, the cars would undergo a perfectly elastic collision. Assume just like in the first collision question that the SUV (initially moving to the right) collides into the stationary smart car....
A world class runner can complete a 100 m dash in about 10 s. Past studies...
A world class runner can complete a 100 m dash in about 10 s. Past studies have shown that runners in such a race accelerate uniformily for a time, t, and then run at a constant speed for the remainder of the race. A runner visits your physics class. You are asked to develop a procedure that will allow you to determine the uniform acceleration =, a, and an approximate value of t for the runner in a 100 m...
1. A 25 kg skydiver has a speed of 20 m/s at an altitude of 350...
1. A 25 kg skydiver has a speed of 20 m/s at an altitude of 350 m above the ground. Determine the kinetic energy possessed by the skydiver. 2. If a cruise ship travels 150 km to the south and then 250 km to the west, what is the ship’s displacement from its starting point? 3. A train is accelerating at a rate of 5 m/s . If its initial velocity is 15 m/s, what is its speed after 10...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT