Question

Suppose a 950kg car can produce a useful power output of 42.4hp. a. How long, in...

Suppose a 950kg car can produce a useful power output of 42.4hp.

a. How long, in seconds, will it take the car to reach a speed of 15m/s, neglecting friction?

b. How long, in seconds, will this acceleration take if the car also climbs a 2.95m high hill in the process?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
(a) How high a hill can a car coast up (engine disengaged) if friction is negligible...
(a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 106 km/h? 44.18 Correct: Your answer is correct. m (b) If, in actuality, a 750 kg car with an initial speed of 106 km/h is observed to coast up a hill to a height 20.0 m above its starting point, how much thermal energy was generated by friction? 177.87 Incorrect: Your answer is incorrect. J (c) What is the...
The engine in an imaginary sports car can provide constant power to the wheels over a...
The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hour (mph). At full power, the car can accelerate from zero to 32.0 mph in time 1.20 s . a) At full power, how long would it take for the car to accelerate from 0 to 64.0 mph ? Neglect friction and air resistance. Please Express your answer in seconds. b) A more realistic car...
- A car moving with over-speed limit constant speed 39.5 m/s passes a police car at...
- A car moving with over-speed limit constant speed 39.5 m/s passes a police car at rest. The police car immediately takes off in pursuit, accelerating with 6.0 m/s^2. How long does it take for police overtake the speeder? - A car moving with over-speed limit constant speed 39.5 m/s passes a police car at rest. The police car immediately takes off in pursuit, accelerating with 6.1 m/s^2. How far from initial point police car will reach the speeder? -...
1. A car moving with over-speed limit constant speed 31.7 m/s passes a police car at...
1. A car moving with over-speed limit constant speed 31.7 m/s passes a police car at rest. The police car immediately takes off in pursuit, accelerating with 10.1 m/s^2. How long does it take for police overtake the speeder? 2. A car moving with over-speed limit constant speed 31.8 m/s passes a police car at rest. The police car immediately takes off in pursuit, accelerating with 9.6 m/s^2. How far from initial point police car will reach the speeder? 3....
a. How high a hill can a car coast up (engine disengaged) if friction is negligible...
a. How high a hill can a car coast up (engine disengaged) if friction is negligible and it’s initial speed is 92.0km/hr? In m b. If, in actuality , a 750 kg car with an initial speed of 92.0 km/hr is observed to coast up a hill to a height of 17.0 m above it’s starting point, how much thermal energy was generated by friction? In Joules C. What is the average force of friction if the hill has a...
Suppose a person does 2.75 × 106 J of useful work in 7.75 h. What is...
Suppose a person does 2.75 × 106 J of useful work in 7.75 h. What is the average useful power output, in watts, of the person? Working at this rate, how long, in seconds, will it take this person to lift 1950 kg of bricks 1.5 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output.)
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...
How high a hill can a car coast up (engine disengaged) if work that is done...
How high a hill can a car coast up (engine disengaged) if work that is done by friction is negligible and its initial speed is 111.7 km/h?
A car of mass of 1350 kg travelling at 35.0 m/s along a highway runs out...
A car of mass of 1350 kg travelling at 35.0 m/s along a highway runs out of gas and starts to coast at the bottom of a hill 15.0m high. The length of the road is 540.0 m and the force of friction on the car is 750.0 N will the car make it to the top of the hill? I) if so, what will it’s speed be at that point? II) if not, how much energy would it need...
Notice that the final answer for the acceleration depends only on g and the angle θ,...
Notice that the final answer for the acceleration depends only on g and the angle θ, not the mass. Equation (2), which gives the normal force, isn't useful here, but is essential when friction plays a role. QUESTION If the car is parked on a more gentle slope, how will the time required for it to slide to the bottom of the hill be affected? The time would be longer.The time would be shorter.    The time would be the same. PRACTICE...