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An object is thrown straight up from ground level with a spe…

An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s2 its distance above ground level 1.0 s later is:  

Published August 23, 2024
Categorized as Uncategorized

Determine if the following statement about  displacement is…

Determine if the following statement about  displacement is TRUE or FALSE:A person makes a round-trip journey, finishing where s/he started. The displacement for the trip is 0 and the distance is some nonzero value.

Published August 23, 2024
Categorized as Uncategorized

How many significant digits does the number 15.00 have?

How many significant digits does the number 15.00 have?

Published August 23, 2024
Categorized as Uncategorized

Consider the following five graphs (note the axes carefully)…

Consider the following five graphs (note the axes carefully). Which of these represents motion at constant speed?

Published August 23, 2024
Categorized as Uncategorized

A stone is thrown horizontally with an initial speed of 10 m…

A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff.  A stop watch measures the stone’s trajectory time from the top of the cliff to the bottom to be 4.3 s.  What is the height of the cliff?

Published August 23, 2024
Categorized as Uncategorized

A jumper in the long-jump goes into the jump with a speed of…

A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20° above the horizontal.  How long is the jumper in the air before returning to the Earth?

Published August 23, 2024
Categorized as Uncategorized

At what angle should a water-gun be aimed in order for the w…

At what angle should a water-gun be aimed in order for the water to land with the greatest horizontal range?

Published August 23, 2024
Categorized as Uncategorized

A car maintains a constant velocity of 100 km/hr for 10 seco…

A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval it acceleration is:

Published August 23, 2024
Categorized as Uncategorized

A polar bear starts at the North Pole.  It travels 1.0 km so…

A polar bear starts at the North Pole.  It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting point.  This trip takes 45 min.  What was the bear’s average velocity?

Published August 23, 2024
Categorized as Uncategorized

A girl throws a rock horizontally, with a velocity of 10 m/s…

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge.  It falls 20 m to the water below.  How far does the rock travel horizontally before striking the water?

Published August 23, 2024
Categorized as Uncategorized

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