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1. A 1.4 x 103 kg car is westbound at a velocity of 37.0 km/h when it collides with a 2.0 x 103 kg truck northbound at a velocity of 35 km/h. If these two vehicles lock together upon collision, what is the initial velocity of the vehicles after collision? 7.2 m/s 2. A 6.2 kg object heading north at 3.0 m/s collides with an 8.0 kg object heading west at 3.5 m/s. If these two masses stick together upon collision, what is their velocity after collision? 2.4 m/s 3. A 4.0 x 10 N Truck moving west at a velocity of 8.0 m/s collides with a 3.0x10 N truck heading south at a velocity of 5.0 m/s. If these two vehicles lock together upon impact, what is their velocity? 5.0 m/s 4. A 50.0 kg object is moving east at an unknown velocity when it collides with a 60.0 kg stationary object. After collision, the 50.0 kg object is traveling at a velocity of 6.0 m/s 50.0 N of E and the 60.0 kg object is traveling at a velocity of 6.3 m/s 38 S of E. a. What was the velocity of the 50.0 kg object before collision? 9.86 m/s b. Determine whether this collision was elastic or inelastic. Ek loss of 340 J inelastic 5. A 15.0 kg penguin waddling east at a velocity of 7.0 m/s collides with a stationary 10.0 kg penguin. After the collision the 15.0 kg penguin is traveling at a velocity of 4.2 m/s 20.0 S of E. a. What is the velocity of the 10.0 kg penguin after collision? 5.1 m/s