What is the dot product of a = - 2i - 5j and b=i - 4j

How to convert 450 mm to cm

Does mass affect the final velocity of an object if the object begins with a high initial velocity? Why or why not?

A certain sound is recorded by a microphone. The same microphone then detects a second sound, which is identical to the first one except that the amplitude of the pressure fluctuations is larger.

How is velocity different from speed? A - Velocity is based on distance. B - Velocity includes direction. C - Velocity can be an average or instantaneous.

Use the equation d = st, where d = distance, s = speed, and t = time. If you ride your bike at a speed of 5 m/s for 10 seconds, how far do you travel? A. 0.5 m B. 5 m C. 2 m C D. 50 m

A small rectangular block of metal must be a magnet is it a. Aligns itself east west when hung up from the ceiling b. Is attracted towards a magnet c. Is made of steel d. Is repelled by a magnet

As you catch a fast-moving fastball, why is it wise to move yourhand in the direction of the ball's motion? Explain in terms ofwork and energy.

What is the dot product of a = - 2i - 5j and b=i - 4j

A race car driver must average 200 km/hr for four laps to qualify for a race. because of engine trouble, the car averages only 170 km/hr over the first two laps. what average speed must be maintained for the last two laps?

A machine has a mechanical advantage of 5. if 300 newtons of input force is used to produce 3,000 newton meters of work what is the output force and what is the distance over which the work is applied