#### If a car is to gain momentum, it must

#### Which of the following vector quantities? I. Density II. Acceleration III. Energy IV. Force

#### When a body is accelerated

#### The algebraic sign of acceleration depends on

#### We know that forces are vectors because

#### A force of 100 dynes acts for 10 seconds on a body of mass500g. What is the change in momentum?

#### Which of the following is not accelerated?

#### A car accelerates for 10s at 6 m/s2. What is its final seed if its initial was 4 m/s?

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