For each of the motions described below, determine the algebraic sign (positive,

Question

For each of the motions described below, determine the algebraic sign (positive, negative, or zero) of the xcomponent and y component of velocity of the object at the time specified. For all of the motions, the positive xaxis points to the right and the positive y axis points upward.

Alex, a mountaineer, must leap across a wide crevasse.(Figure 1) The other side of the crevasse is below the point from which he leaps, as shown in the figure. Alex leaps horizontally and successfully makes the jump.

Part A

Determine the algebraic sign of Alex's x velocity and y velocity at the instant he leaves the ground at the beginning of the jump.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Part B

Determine the algebraic signs of Alex's x velocity and y velocity the instant before he lands at the end of the jump.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Part C

Determine the algebraic signs of the ball's x velocity and y velocity the instant after it leaves the player's hands.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Part D

Determine the algebraic signs of the ball's x velocity and y velocity at the ball's maximum height.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

For each of the motions described below, determine the algebraic sign (positive, negative, or zero) of the xcomponent and y component of velocity of the object at the time specified. For all of the motions, the positive xaxis points to the right and the positive y axis points upward.

Alex, a mountaineer, must leap across a wide crevasse.(Figure 1) The other side of the crevasse is below the point from which he leaps, as shown in the figure. Alex leaps horizontally and successfully makes the jump.

Part A

Determine the algebraic sign of Alex's x velocity and y velocity at the instant he leaves the ground at the beginning of the jump.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Part B

Determine the algebraic signs of Alex's x velocity and y velocity the instant before he lands at the end of the jump.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Part C

Determine the algebraic signs of the ball's x velocity and y velocity the instant after it leaves the player's hands.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Part D

Determine the algebraic signs of the ball's x velocity and y velocity at the ball's maximum height.

Type the algebraic signs of the x velocity and the y velocity separated by a comma (examples: +,- and 0,+).

Explanation / Answer

A. (+,0)

B. (+,-)

C. (+,+)

D. (+,0)

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