1.           Electrons, like all forms of matter, fall under the influence of gravity. If an electron is projected horizontally with a speed of 3.0e7 m/s (one tenth the speed of light), how far will it fall in traversing 1 m of horizontal distance ?

You have chosen " + ans1 + " - Right

You have chosen " + ans1 + " - Wrong
"); document.write ("The answer is 'A. 5.44e-15 m'

2.           A rifle is aimed horizontally at a target 100 ft away. The bullet hits the target 0.75 in. below the aiming point. What is the muzzle velocity of the rifle?

You have chosen " + ans2 + " - Right

You have chosen " + ans2 + " - Wrong
"); document.write ("The answer is 'A. 1600 ft/s'

3.           A projectile is fired horizontally from a gun located 45 m above a horizontal plane with a muzzle speed of 200 m/s. What is the magnitude of the vertical component of its velocity as it strikes the ground?

You have chosen " + ans3 + " - Right

You have chosen " + ans3 + " - Wrong
"); document.write ("The answer is 'D. 29.7 m/s'

4.           A projectile is launched with an intitial velocity of 30 m/s at an angle of 60 degrees above the horizontal. Calculate the magnitude and the direction of its velocity 5 s after launch?

You have chosen " + ans4 + " - Right

You have chosen " + ans4 + " - Wrong
"); document.write ("The answer is 'C. 27.5 m/s, 56.9 degrees below the horizontal'

5.           You throw a ball from a cliff with an intial velocity of 15 m/s at an angle of 20 degrees below the horizontal. Fin its vetical displacement 2.3s later

?

You have chosen " + ans5 + " - Right

You have chosen " + ans5 + " - Wrong
"); document.write ("The answer is 'B. 37.7 m "); num_wrong += 1; } document.write ("

6.           A particle with mass m has linear momentum p equal to mc. What is its speed in terms of c, the speed of light ?

You have chosen " + ans6 + " - Right

You have chosen " + ans6 + " - Wrong
"); document.write ("The answer is 'B. 0.707 c'

7.           In the 1968 Olympicss in Mexico City, Bob Beamon shattered the rocord for the long jump with a jump of 8.90 m. Assume that his initial speed on takeoff was 9.5 m/s, about equal to that of a sprinter. How close did this world-class athlete come to the maximum possible range in the absence of the air resistance? The value of g in Mexico City is 9.78 m/s/s?

You have chosen " + ans7 + " - Right

You have chosen " + ans7 + " - Wrong
"); document.write ("The answer is 'D. 33 cm'

8.           A foot ball player punts the football so that it will have a 'hang time' (time of flight) of 4.5 s and land 50 yd(=45.7 m) away. If the ball leaves the player's foot 5.0 ft(=1.52 m) above the ground, what is its initial velocity(magnitude, and direction) ?

You have chosen " + ans8 + " - Right

You have chosen " + ans8 + " - Wrong
"); document.write ("The answer is 'A. 24.0 m/s at 64.89 degrees above the horizontal"); num_wrong += 1; } document.write ("

9.           What is the maximum vertical height to which a baseball player can throw a ball if he can throw it a maximum distance of 60m ?

"); if (ans9 == 'B. 30 m above the release point') { document.write ("

You have chosen " + ans9 + " - Right

"); num_correct += 1; } else { document.write ("

You have chosen " + ans9 + " - Wrong
"); document.write ("The answer is 'B. 30 m above the release point'

"); num_wrong += 1; } document.write ("

10.           A ball rolls off the top of a stairway with a horizontal velocity of magnitude 5.0 ft/s. The steps are 8.0 in high and 8.0 in wide. Which step will the ball hit first ?

"); if (ans10 == 'C. The third') { document.write ("

You have chosen " + ans10 + " - Right

"); num_correct += 1; } else { document.write ("

You have chosen " + ans10 + " - Wrong
"); document.write ("The answer is 'C. The third'

"); num_wrong += 1; } document.write ("

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"); document.write ("

Out of a possible 10 questions, you received " + num_correct + " correct and " + num_wrong + " wrong

"); document.write ("See Quiz Again
"); document.write ("
"); } //-->

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1.           Electrons, like all forms of matter, fall under the influence of gravity. If an electron is projected horizontally with a speed of 3.0e7 m/s (one tenth the speed of light), how far will it fall in traversing 1 m of horizontal distance?

A. 5.44e-15 m B. 5.44e15 m C. 0.44e-15 m D. 9.44e-18 m

2.           A rifle is aimed horizontally at a target 100 ft away. The bullet hits the target 0.75 in. below the aiming point. What is the muzzle velocity of the rifle?

A. 1600 ft/s B. 192 ft/s C. 9800 ft/s D. 600 ft/s

3.           A projectile is fired horizontally from a gun located 45 m above a horizontal plane with a muzzle speed of 200 m/s. What is the magnitude of the vertical component of its velocity as it strikes the ground ?

A. 75 ft/s B. 50 m/s C. 500 m/s D. 29.7 m/s

4.           A projectile is launched with an intitial velocity of 30 m/s at an angle of 60 degrees above the horizontal. Calculate the magnitude and the direction of its velocity 5 s after launch ?

A. 27.5 m/s, 56.9 degrees above the horizontal B. 27.5 m/s, 36.9 degrees below the horizontal C. 27.5 m/s, 56.9 degrees below the horizontal D. 20.5 m/s, 56.9 degrees below the horizontal

5.           You throw a ball from a cliff with an intial velocity of 15 m/s at an angle of 20 degrees below the horizontal. Fin its vetical displacement 2.3s later?

A. 40.9 m B. 37.7 m C. 50.0 m D. 199 m

6.           A particle with mass m has linear momentum p equal to mc. What is its speed in terms of c, the speed of light ?

A. 0.071 c B. 0.707 c C. 3e8 c D. 3 c

7.           In the 1968 Olympicss in Mexico City, Bob Beamon shattered the rocord for the long jump with a jump of 8.90 m. Assume that his initial speed on takeoff was 9.5 m/s, about equal to that of a sprinter. How close did this world-class athlete come to the maximum possible range in the absence of the air resistance? The value of g in Mexico City is 9.78 m/s/s ?

A. 0.33m B. 33 m C. 0.33 cm D. 33 cm

8.           A foot ball player punts the football so that it will have a "hang time" (time of flight) of 4.5 s and land 50 yd(=45.7 m) away. If the ball leaves the player's foot 5.0 ft(=1.52 m) above the ground, what is its initial velocity(magnitude, and direction) ?

A. 24.0 m/s at 64.89 degrees above the horizontal B. 24.0 m/s at 64.89 degrees below the horizontal C. 78.3 m/s at 64.89 degrees above the horizontal D. 24.0 m/s at 26.11 degrees above the horizontal

9.           What is the maximum vertical height to which a baseball player can throw a ball if he can throw it a maximum distance of 60 m ?

A. 50 m above the release point B. 30 m above the release point C. 30 m below the release point D. 50 m below the release point

10.           A ball rolls off the top of a stairway with a horizontal velocity of magnitude 5.0 ft/s. The steps are 8.0 in high and 8.0 in wide. Which step will the ball hit first ?

A. The first B. The second C. The third D. The forth

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