1- A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the bullet's acceleration as it passes through the board? 500 km/s² 550 km/s² 360 km/s² 520 km/s² 275 km/s² a. b. C. d. e. 2- A particle confined to motion along the x axis moves with constant acceleration from x= 2.0 m to x = 8.0 m during a 2.5-s time interval. The velocity of the particle at X= 8.0 m is 2.8 m/s. What is the acceleration during this time interval? a. 0.48 m/s² b. 0.32 m/s² C. 0.64 m/s² d. 0.80 m/s² e. 0.57 m/s² 3- A rocket, initially at rest, is fired vertically with an upward acceleration of 10 m/s². At an altitude of 0.50 km, the engine of the rocket cuts off. What is the maximum altitude it achieves? 1.9 km 1.3 km 1.6 km 1.0 km 2.1 km a. b. C. d. e. 4- The position of a particle as it moves along the x axis is given by x= 15e 2 m, where t is in s. What is the acceleration of the particle at t= 1.0 s? 22 m/s 60 m/s C. 8.1 m/s d. 15 m/s e. 35 m/s a. b. 5- A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x= 10 cm. Its position 7.0 s later is X= 30 cm. What is the acceleration of the particle? a. 7.3 cm/s² b. 8.9 cm/s² 11 cm/s² 15 cm/s² 13 cm/s² C. d. e.
1-A bullet is fired through a board,14.0 cm thick,with its line of motion perpendicular to the face of the board. If it enters with a specd of 450 m/s and emerges with a speed of 220 m/s,what is the bullet's aceeleration as it passes through the board? a. 500km/s2 b. 550km/s C. 360km/s 'P 520km/s c. 275km/s
2-A particle confined to motion along the X axis moves with constant acceleration from X=2.0 m to X=8.0 m during a 2.5-s time interval.The velocity of the particle at X-8.0 m is 2.8 m/s.What is the acceleration during this time interval? a.0.48m/s b.0.32m/s c.0.64m/s d.0.80m/s c.0.57m/s2
3.A rocket,initially at rest,is fired vertically with an upward acceleration of 10 m/s.At an altitude of 0.50 km,the enginc of the rocket cuts off.What is the maximum altitude it achieves a.1.9km b.1.3km c.1.6km d.1.0km c.2.1km 4The position of a particle as it moves along the axis is given by x=15e 2 m,where fis in s.What is the acceleration of the particle at f=1.0s a.22m/s b.60m/s c.8.1m/s d.15m/s e35m/s 5A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x=10 cm Its position 7.0 s later is X=30 cmWhat is the acceleration of the particle? 7.3cm/s b. 8.9cm/s c. 11cm/s2 P 15cm/s2 c, 13cm/s