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
dalvyx [7]
3 years ago
14

A person riding a bike has an initial velocity of 2.5 m/s and accelerates at a rate of 1.5 m/s2 for

Physics
1 answer:
Dovator [93]3 years ago
6 0

Answer:

11.5m/s

Explanation:

v=2.5

a=1.5

t=6s

vf=vi+at

vf=2.5+(1.5)(6)

vf=11.5

You might be interested in
You throw a rock straight up and find that it returns to your hand 3.40 s after it left your hand. Neglect air resistance. What
Soloha48 [4]

Answer:

The maximum height of the rock is 14.2 m

Explanation:

The equations that describe the height and velocity of the rock are the following:

y = y0 + v0 · t + 1/2 · g · t²

v = v0 + g · t

Where:

y = height of the object at time t

y0 = initial height

t = time

g = acceleration due to gravity (-9.8 m/s² if upward is positive)

v = velocity of the object at time t

We know that at t = 3.40 s, the rock is in your hand again. Then, if we place the origin of the frame of reference at your hand, the position of the rock at 3.40 s is 0 m. Using the equation of the position, we can calculate the initial velocity that we will need to obtain the max-height.

y = y0 + v0 · t + 1/2 · g · t²

0 = v0 · 3.40 s - 1/2 · 9.8 m/s² · (3.40 s)²

(1/2 · 9.8 m/s² · (3.40 s)² ) / 3.40 s = v0

v0 = 16.7 m/s

At max-height, the velocity of the rock is 0. Then, using the equation of velocity we can calculate the time it takes the rock to reach the max-height. With that time, we can calculate the maximum height.

v = v0 + g · t      (at max-height, v = 0)

0 = 16.7 m/s - 9.8 m/s² · t

- 16.7 m/s /  - 9.8 m/s² = t

t = 1.70 s

Now, using this time in the equation of height:

y = y0 + v0 · t + 1/2 · g · t²

y = 0 m + 16.7 m/s · 1.70 s - 1/2 · 9.8 m/s² · (1.70 s)²

y = 14.2 m

The maximum height of the rock is 14.2 m

8 0
3 years ago
A 2.69-kg drone is flying over a lake. With both the x and y directions horizontal (that is, viewing the drone from above), the
eimsori [14]
bad bleep chanve 9922
4 0
2 years ago
In what way is a piano an example of a quantized system?
uranmaximum [27]

When you play a piano, your energy increases in a uniform, continuous manner and is therefore quantized.When you play a piano, you can press only on individual keys, so that your energy is restricted to certain values and is therefore quantized.

7 0
3 years ago
Q.1. What determines the rate at which energy is delivered by a current ?​
aksik [14]

Explanation:

The rate of consumption of electric energy in an electric appliance is called electric power. Hence, the rate at which energy is delivered by a current is the power of the appliance.

8 0
3 years ago
Which statement about projectile motion is true?
Svetllana [295]

C. The range of a projectile increases with an increase in the angle of launch.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What would be the magnitude of an earthquake 100 km away that produced 100 mm of amplitude
    11·2 answers
  • The speedometer of a car moving east reads 60 mph. It passes another car that travels west at 60 mph do the cars have the same v
    9·1 answer
  • A large box of mass M is moving on a horizontal surface at speed v0. A small box of mass m sits on top of the large box. The coe
    13·1 answer
  • The temperature of a system drops by 30°F during a cooling process. Express this drop in temperature in K, R, and °C.
    14·1 answer
  • swelling magma chambers below the surface can cause the crust above to uplift and form a large flat regions higher than the surr
    13·1 answer
  • 3. When you slow for a turn, some traction is used to slow, and some is (1 point).
    8·2 answers
  • T or F. A virtual image can sometimes be seen on a screen; it just depends on the situation.
    6·1 answer
  • The weight of an object is the force pulling the object:
    13·1 answer
  • A winch is capable of hauling a ton of bricks vertically two stories (6.35 m ) in 24.5 s .
    12·2 answers
  • 2. A 4.0 kg magnetic toy car traveling at 3.0 m/s east collides and sticks to a 5.0 kg toy magnetic car also traveling at 2.0 m/
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!