these questions were marked wrong can someone figure out what I did wrong? Thank you

Calculate the momentum of a 2.50 x 103 kg truck traveling at 110 km/h. P= ( 2 5500 x 10 3, 110) ( 30. 6 m /s P = 760500 How fast is a 1.50 kg ball moving if it has a momentum of a 4.50 kg*m/s? P = P- :09275 kg A 75.0 g ball is rolling at a speed of 57.0 cm/s. Calculate the ball's momentum. Jf - V = tant = 0 + ( 2. 0 m 15 2 ) ( 1. 53 ) = 3 m/s A 5.00 kg ball accelerates at a rate of 2.00 m/s2 for 1.50 seconds. Calculate the ball's momentum after the acceleration