1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
algol [13]
3 years ago
12

Ann is driving down a street at 63 km/h. Suddenly a child runs into the street. If it takes Ann 0.796 s to react and apply the b

rakes, how far will she have moved before she begins to slow down? Answer in units of m.
Physics
1 answer:
Goryan [66]3 years ago
4 0

Answer:

13.93 m

Explanation:

initial velocity, u = 63 km/h

Convert km/h into m/s

so, u = 63 km/h = 17.5 m/s

reaction time, t = 0.796 s

Distance traveled by Ann before slowing down = speed of Ann x reaction time

                                                                               = 17.5 x 0.796

                                                                               = 13.93 m

Thus, the distance traveled by Ann before slowing down is 13.93 m.

You might be interested in
Match each term with the appropriate definition.
Ratling [72]

Answer:

mass- the amount of matter in an object

balance- tool used to measure mass

scale- a tool used to measure weight

weight- the downward pull on an object due to gravity

8 0
3 years ago
One form of energy can be _____ another type of energy.
kotegsom [21]

We can answer this one very quickly.  From the <em>Law of Conservation of Energy</em>, we know that "Energy can't be created or destroyed.".

So that only leaves us one way to complete the sentence in this question:

"One form of energy can be <em>transformed into</em> another type of energy. "  <em>(B)</em>

4 0
3 years ago
A car has the velocity of 2.35 after 4.67 it's velocity is 9.89 what is the average acceleration
kiruha [24]
Average acceleration  =  (change in speed) / (time for the change) .
  
Change in speed = (ending speed) - (beginning speed)

                       =  (9.89 miles/hour) - (2.35 yards/second)  = 26,839.2 ft/hr

Acceleration  =  (26,839.2 ft/hr) / (4.67 days)  =  2,873.58 inch/hour²  
6 0
3 years ago
A solid, uniform sphere of mass 2.0 kg and radius 1.7 m rolls without slipping down an inclined plane of height 5.3 m. what is t
inn [45]
<span>Answer: Total kinetic energy at the bottom = 0.5(1+0.4) mv^2 = mgh V^2 = 7*9.8/0.7 V = 9.9m/s ω = V/r = 9.9/1.7 = 5.8rad/s Answer c. 5.8 rad/s</span>
7 0
4 years ago
A 11 547,83-N car is raised using a hydraulic lift, which
kati45 [8]

Answer:

75457.54816 N

Explanation:

F_1 = Initial force

F_2 = Weight of car = 11547.83 N

r_1 = Smaller radius = 5 cm

r_2 = Larger radius = 19.56 cm

From Pascal's law we have

\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\Rightarrow F_1=F_2\dfrac{A_1}{A_2}\\\Rightarrow F_1=11547.83\dfrac{\pi r_1^2}{\pi r_2^2}\\\Rightarrow F_1=11547.83\dfrac{5^2}{19.56^2}\\\Rightarrow F_1=754.57548\ N

The force is 754.57548 N

3 0
4 years ago
Other questions:
  • There are four charges, each with a magnitude of 2.06 µC. Two are positive and two are negative. The charges are fixed to the co
    9·1 answer
  • Which statements accurately describe the waste generated by nuclear reactions? Check all that apply. It is hazardous for hundred
    10·2 answers
  • A pool ball hits a second pool ball with equal mass. The first pool ball comes to a complete stop, while the second pool ball ro
    8·1 answer
  • 1. A 12 kg barrel is pulled up by a rope. The barrel accelerates at 1.2 m/s2. Find the force exerted by the rope. Show all your
    5·1 answer
  • A 9 volt battery is hooked up to two resistors in series. one has a resistence of 5 ohms, and the other has a resistance of 10 o
    12·1 answer
  • Which law is this As you pedal your bicycle harder, the bicycle goes faster.
    8·1 answer
  • Help uhh i need to know this answer
    12·1 answer
  • Solve for w. <br> E = hf-w<br> w=?<br> 1) E/hf<br> 2) -E/hf<br> 3) E + hf<br> 4) hf - E
    8·1 answer
  • 2) Calculate the gravitational potential energy that a parachutist has just as he
    5·1 answer
  • what type of image is formed by a lens if m = -4.6? A. One that is larger than the object and virtual, B. One that is smaller th
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!