Question

If a car accelerates from a stationary starting position, what difference would it make to the velocity of the car to gradually increase the amount of acceleration to some maximum value, rather than maintain the acceleration at this maximum value from the beginning?

Answer #1

we know that the accelerating **objects are constantly
changing their velocity**, one can say that the distance
traveled/time is not a constant value in an accelerated motion.

In a motion with increasing acceleration the **increase in
velocity per unit time is not constant,** so with every
fixed time interval increase in velocity is not constant.

We can understant this with following table for fixed acceleration and changing acceleration:

**Constant Acceleration**, we see that difference
of velocity is 4m/s for each succesive time interval.

time(s) | Velocity(m/s) |

0 | 0 |

1 | 4 |

2 | 8 |

3 | 12 |

**Increasing acceleration**

time(s) | Velocity(m/s) |

0 | 0 |

1 | 2 |

2 | 6 |

3 | 14 |

A car and a truck, starting from rest, have the same
acceleration, but the truck accelerates for twice the length of
time. Compared with the car, the truck will travel
a.) twice as far
b.) three times as far
c.) 1.4 times as far
d.) four times as fare.) one half as far

1 point) A truck starts from rest and accelerates at
1?/?2. 6 s later, a car accelerates from rest at the
same starting point with an acceleration of
2.7?/?2.
a) Where and when does the car catch the truck?
1. ?m from the starting point
2. at ? seconds from the moment the truck started to
accelerate.
b) What are their velocities when they meet?
The truck : m/s
The car : m/s

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A car at the Indianapolis 500 accelerates uniformly from the pit
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A) Determine the tangential and radial acceleration of the car
when it is halfway through the arc, assuming constant tangential
acceleration.
B) If the curve were flat, what would the coefficient of static
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starting from rest, a car acceleration
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what is the angle between the two vectors
from the line 1 column 49 to line 1 column 73. Unexpected
‘<mstyle and from line 1 column 56 to line 1 column 95.
Unexpected ‘<mi; ?
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1. Starting from rest, it took you 12 seconds to accelerate your
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a.)
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