1)You are running at 2.7 m/s and your cell phone falls from your pocket.If the p

Question

1)You are running at 2.7 m/s and your cell phone falls from your pocket.If the phone falls from your pocket at 1 m high,how far does it travel forward (horizontally) before it hits the ground ?

a)1.2m

b)2.7m

c)0.0

d)0.55m

e)0.86

2)Vector A has components x=3 m and y=6.5 and vector B has components x=-(negative)6.50m and y= 3m.If two vectors are added together,what is the length of the resuting vector ?

a)6 m

b) 10.1 m

c)0.0 m

d)7 m

e)14.3 m

3)A ball rolls off a horizontal table which is 90 cm high.If the ball lands away 1.5 m away from the edge of the table,what was the ball's speed when it left the table top?

a)1.5 m/s

b)3.0 m/s

c)1.7 m/s

d)4.9 m/s

e)3.5 m/s

4) A dolphin jumps out of water with a speed of 12m/s at an angle of 37 degree.how lobg is the dolphin in the air before it lands back in the water ?

a)1.5s

b)2.4s

c)1.0s

d)3.0s

e)0.80s

5)A boat of mass 1500 kg is cruising at 3.0 m/s across the water when the engine is turned off.If the boat glides across the water for 50 m before it stops, what is the magnitude of the force of resistance of the water which slows it down ?

a)90N

b)135 N

c)2.5 * 10^4 N

d)1500 N

e)300 N

Explanation / Answer

1)1=0.5*9.8*t^2

t=0.452

s=2.7*t=1.2m A Option

2)9.5^2+3.5^2=102.5

sqrt 102.5=10.1m B option

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.